| slovo | definícia |
uric acid
(encz) | uric acid, n: |
Uric acid
(gcide) | Uric \U"ric\, a. [Gr. ? urine: cf. F. urique. See Urine.]
(Physiol. Chem.)
Of or pertaining to urine; obtained from urine; as, uric
acid.
[1913 Webster]
Uric acid, a crystalline body, present in small quantity in
the urine of man and most mammals. Combined in the form of
urate of ammonia, it is the chief constituent of the urine
of birds and reptiles, forming the white part. Traces of
it are also found in the various organs of the body. It is
likewise a common constituent, either as the free acid or
as a urate, of urinary or renal calculi and of the
so-called gouty concretions. From acid urines, uric acid
is frequently deposited, on standing in a cool place, in
the form of a reddish yellow sediment, nearly always
crystalline. Chemically, it is composed of carbon,
hydrogen, nitrogen, and oxygen, C5H4N4O3, and by
decomposition yields urea, among other products. It can be
made synthetically by heating together urea and glycocoll.
It was formerly called also lithic acid, in allusion to
its occurrence in stone, or calculus.
[1913 Webster] |
uric acid
(wn) | uric acid
n 1: a white tasteless odorless crystalline product of protein
metabolism; found in the blood and urine |
| | podobné slovo | definícia |
cyanuric acid
(encz) | cyanuric acid, n: |
diethylbarbituric acid
(encz) | diethylbarbituric acid, n: |
lauric acid
(encz) | lauric acid, n: |
sulfuric acid
(encz) | sulfuric acid,kyselina sírová Zdeněk Brož |
sulphuric acid
(encz) | sulphuric acid,kyselina sírová n: [chem.] mamm |
allanturic acid
(gcide) | Lantanuric \Lan`ta*nu"ric\, a. [Formed by transposition of the
letters of allantoin and -uric.] (Chem.)
Pertaining to, or designating, a nitrogenous organic acid of
the uric acid group, obtained by the decomposition of
allantoin, and usually called allanturic acid.
[1913 Webster] |
Barbituric acid
(gcide) | Barbituric acid \Bar`bi*tu"ric ac"id\ (Chem.)
A white, crystalline substance, CH2(CO.NH)2.CO, derived
from alloxantin, also from malonic acid and urea, and
regarded as a substituted urea.
[1913 Webster] Barbizon school |
Cyanuric acid
(gcide) | Cyanuric acid \Cyanuric acid\ (Chem.),
an organic acid, C3O3N3H3, first obtained by heating uric
acid or urea, and called pyrouric acid; afterwards obtained
from isocyanic acid. It is a white crystalline substance,
odorless and almost tasteless; -- called also tricarbimide.
[1913 Webster] |
Disulphuric acid
(gcide) | Disulphuric \Di`sul*phu"ric\, a. [Pref. di- + sulphuric.]
(Chem.)
Applied to an acid having in each molecule two atoms of
sulphur in the higher state of oxidation.
[1913 Webster]
Disulphuric acid, a thick oily liquid, H2S2O7, called
also Nordhausen acid (from Nordhausen in the Harts,
where it was originally manufactured), {fuming sulphuric
acid}, and especially pyrosulphuric acid. See under
Pyrosulphuric.
[1913 Webster] |
ethyl sulphuric acid
(gcide) | oenothionic \oe`no*thi*on"ic\, a. [Gr. o'i^nos wine + thionic.]
(Chem.)
Pertaining to an acid now called sulphovinic acid or {ethyl
sulphuric acid}.
[1913 Webster] |
Ethylsulphuric acid
(gcide) | Ethylsulphuric \Eth`yl*sul*phu"ric\a. (Chem.)
Pertaining to, or containing, ethyl and sulphuric acid.
[1913 Webster]
Ethylsulphuric acid (Chem.), an acid sulphate of ethyl,
H.C2H5.SO4, produced as a thick liquid by the action of
sulphiric acid on alcohol. It appears to be the active
catalytic agent in the process of etherification.
[1913 Webster] |
Fulminuric acid
(gcide) | Fulminuric \Ful"mi*nu"ric\, a. [Fulminic + cyanuric.] (Chem.)
Pertaining to fulminic and cyanuric acids, and designating an
acid so called.
[1913 Webster]
Fulminuric acid (Chem.), a white, crystalline, explosive
substance, H3C3N3O3, forming well known salts, and
obtained from the fulminates. It is isomeric with cyanuric
acid, and hence is also called isocyanuric acid.
[1913 Webster] |
Fuming sulphuric acid
(gcide) | Fuming \Fum"ing\, a.
Producing fumes, or vapors.
[1913 Webster]
Cadet's fuming liquid (Chem.), alkarsin.
Fuming liquor of Libavius (Old Chem.), stannic chloride;
the chloride of tin, SnCl4, forming a colorless, mobile
liquid which fumes in the air. Mixed with water it
solidifies to the so-called butter of tin.
Fuming sulphuric acid. (Chem.) Same as Disulphuric acid,
uder Disulphuric.
[1913 Webster]Sulphuric \Sul*phu"ric\, a. [Cf. F. sulfurique.]
1. Of or pertaining to sulphur; as, a sulphuric smell.
[1913 Webster]
2. (Chem.) Derived from, or containing, sulphur;
specifically, designating those compounds in which the
element has a higher valence as contrasted with the
sulphurous compounds; as, sulphuric acid.
[1913 Webster]
Sulphuric acid.
(a) Sulphur trioxide (see under Sulphur); -- formerly so
called on the dualistic theory of salts. [Obs.]
(b) A heavy, corrosive, oily liquid, H2SO4, colorless
when pure, but usually yellowish or brownish, produced
by the combined action of sulphur dioxide, oxygen
(from the air), steam, and nitric fumes. It attacks
and dissolves many metals and other intractable
substances, sets free most acids from their salts, and
is used in the manufacture of hydrochloric and nitric
acids, of soda, of bleaching powders, etc. It is also
powerful dehydrating agent, having a strong affinity
for water, and eating and corroding paper, wood,
clothing, etc. It is thus used in the manufacture of
ether, of imitation parchment, and of nitroglycerin.
It is also used in etching iron, in removing iron
scale from forgings, in petroleum refining, etc., and
in general its manufacture is the most important and
fundamental of all the chemical industries. Formerly
called vitriolic acid, and now popularly vitriol,
and oil of vitriol.
Fuming sulphuric acid, or Nordhausen sulphuric acid. See
Disulphuric acid, under Disulphuric.
Sulphuric anhydride, sulphur trioxide. See under Sulphur.
Sulphuric ether, common anaesthetic ether; -- so called
because made by the catalytic action of sulphuric acid on
alcohol. See Ether, 3
(a) .
[1913 Webster]Disulphuric \Di`sul*phu"ric\, a. [Pref. di- + sulphuric.]
(Chem.)
Applied to an acid having in each molecule two atoms of
sulphur in the higher state of oxidation.
[1913 Webster]
Disulphuric acid, a thick oily liquid, H2S2O7, called
also Nordhausen acid (from Nordhausen in the Harts,
where it was originally manufactured), {fuming sulphuric
acid}, and especially pyrosulphuric acid. See under
Pyrosulphuric.
[1913 Webster] |
fuming sulphuric acid
(gcide) | Fuming \Fum"ing\, a.
Producing fumes, or vapors.
[1913 Webster]
Cadet's fuming liquid (Chem.), alkarsin.
Fuming liquor of Libavius (Old Chem.), stannic chloride;
the chloride of tin, SnCl4, forming a colorless, mobile
liquid which fumes in the air. Mixed with water it
solidifies to the so-called butter of tin.
Fuming sulphuric acid. (Chem.) Same as Disulphuric acid,
uder Disulphuric.
[1913 Webster]Sulphuric \Sul*phu"ric\, a. [Cf. F. sulfurique.]
1. Of or pertaining to sulphur; as, a sulphuric smell.
[1913 Webster]
2. (Chem.) Derived from, or containing, sulphur;
specifically, designating those compounds in which the
element has a higher valence as contrasted with the
sulphurous compounds; as, sulphuric acid.
[1913 Webster]
Sulphuric acid.
(a) Sulphur trioxide (see under Sulphur); -- formerly so
called on the dualistic theory of salts. [Obs.]
(b) A heavy, corrosive, oily liquid, H2SO4, colorless
when pure, but usually yellowish or brownish, produced
by the combined action of sulphur dioxide, oxygen
(from the air), steam, and nitric fumes. It attacks
and dissolves many metals and other intractable
substances, sets free most acids from their salts, and
is used in the manufacture of hydrochloric and nitric
acids, of soda, of bleaching powders, etc. It is also
powerful dehydrating agent, having a strong affinity
for water, and eating and corroding paper, wood,
clothing, etc. It is thus used in the manufacture of
ether, of imitation parchment, and of nitroglycerin.
It is also used in etching iron, in removing iron
scale from forgings, in petroleum refining, etc., and
in general its manufacture is the most important and
fundamental of all the chemical industries. Formerly
called vitriolic acid, and now popularly vitriol,
and oil of vitriol.
Fuming sulphuric acid, or Nordhausen sulphuric acid. See
Disulphuric acid, under Disulphuric.
Sulphuric anhydride, sulphur trioxide. See under Sulphur.
Sulphuric ether, common anaesthetic ether; -- so called
because made by the catalytic action of sulphuric acid on
alcohol. See Ether, 3
(a) .
[1913 Webster]Disulphuric \Di`sul*phu"ric\, a. [Pref. di- + sulphuric.]
(Chem.)
Applied to an acid having in each molecule two atoms of
sulphur in the higher state of oxidation.
[1913 Webster]
Disulphuric acid, a thick oily liquid, H2S2O7, called
also Nordhausen acid (from Nordhausen in the Harts,
where it was originally manufactured), {fuming sulphuric
acid}, and especially pyrosulphuric acid. See under
Pyrosulphuric.
[1913 Webster] |
Hippuric acid
(gcide) | Hippuric \Hip*pu"ric\, a. [Gr. "i`ppos horse + o"y`ron urine:
cf. F. hippurique.] (Physiol. Chem.)
Obtained from the urine of horses; as, hippuric acid.
[1913 Webster]
Hippuric acid, a white crystalline substance, containing
nitrogen, present in the urine of herbivorous animals, and
in small quantity in human urine. By the action of acids,
it is decomposed into benzoic acid and glycocoll.
[1913 Webster] |
Hyposulphuric acid
(gcide) | Hyposulphuric \Hy`po*sul*phur"ic\, a. [Pref. hypo- + sulphuric.]
(Chem.)
Pertaining to, or containing, sulphur in a lower state of
oxidation than in the sulphuric compounds; as, hyposulphuric
acid.
[1913 Webster]
Hyposulphuric acid, an acid, H2S2O6, obtained by the
action of manganese dioxide on sulphur dioxide, and known
only in a watery solution and in its salts; -- called also
dithionic acid. See Dithionic.
[1913 Webster] |
isocyanuric acid
(gcide) | Fulminuric \Ful"mi*nu"ric\, a. [Fulminic + cyanuric.] (Chem.)
Pertaining to fulminic and cyanuric acids, and designating an
acid so called.
[1913 Webster]
Fulminuric acid (Chem.), a white, crystalline, explosive
substance, H3C3N3O3, forming well known salts, and
obtained from the fulminates. It is isomeric with cyanuric
acid, and hence is also called isocyanuric acid.
[1913 Webster] |
Lauric acid
(gcide) | Lauric acid \Lauric acid\ (Chem.),
a white, crystalline substance, CH3.(CH2)10.COOH,
resembling palmitic acid, and obtained from the fruit of the
bay tree, and various other vegetable sources. The sodium
salt (sodium lauryl sulfate) is used as a detergent.
Syn: dodecanoic acid, laurostearic acid, dodecoic acid.
[1913 Webster + PJC] |
leucoturic acid
(gcide) | Oxalantin \Ox`a*lan"tin\, n. [From Alloxantin, by
transposition of letters.] (Chem.)
A white crystalline nitrogenous substance (C6H4N4O5)
obtained by the reduction of parabanic acid; -- called also
leucoturic acid.
[1913 Webster] |
Nordhausen sulphuric acid
(gcide) | Sulphuric \Sul*phu"ric\, a. [Cf. F. sulfurique.]
1. Of or pertaining to sulphur; as, a sulphuric smell.
[1913 Webster]
2. (Chem.) Derived from, or containing, sulphur;
specifically, designating those compounds in which the
element has a higher valence as contrasted with the
sulphurous compounds; as, sulphuric acid.
[1913 Webster]
Sulphuric acid.
(a) Sulphur trioxide (see under Sulphur); -- formerly so
called on the dualistic theory of salts. [Obs.]
(b) A heavy, corrosive, oily liquid, H2SO4, colorless
when pure, but usually yellowish or brownish, produced
by the combined action of sulphur dioxide, oxygen
(from the air), steam, and nitric fumes. It attacks
and dissolves many metals and other intractable
substances, sets free most acids from their salts, and
is used in the manufacture of hydrochloric and nitric
acids, of soda, of bleaching powders, etc. It is also
powerful dehydrating agent, having a strong affinity
for water, and eating and corroding paper, wood,
clothing, etc. It is thus used in the manufacture of
ether, of imitation parchment, and of nitroglycerin.
It is also used in etching iron, in removing iron
scale from forgings, in petroleum refining, etc., and
in general its manufacture is the most important and
fundamental of all the chemical industries. Formerly
called vitriolic acid, and now popularly vitriol,
and oil of vitriol.
Fuming sulphuric acid, or Nordhausen sulphuric acid. See
Disulphuric acid, under Disulphuric.
Sulphuric anhydride, sulphur trioxide. See under Sulphur.
Sulphuric ether, common anaesthetic ether; -- so called
because made by the catalytic action of sulphuric acid on
alcohol. See Ether, 3
(a) .
[1913 Webster] |
purpuric acid
(gcide) | Murexan \Mu*rex"an\, n. [From Murexide.] (Chem.)
A complex nitrogenous substance obtained from murexide,
alloxantin, and other ureids, as a white, or yellowish,
crystalline which turns red on exposure to the air; -- called
also uramil, dialuramide, and formerly purpuric acid.
[1913 Webster] |
pyrosulphuric acid
(gcide) | Disulphuric \Di`sul*phu"ric\, a. [Pref. di- + sulphuric.]
(Chem.)
Applied to an acid having in each molecule two atoms of
sulphur in the higher state of oxidation.
[1913 Webster]
Disulphuric acid, a thick oily liquid, H2S2O7, called
also Nordhausen acid (from Nordhausen in the Harts,
where it was originally manufactured), {fuming sulphuric
acid}, and especially pyrosulphuric acid. See under
Pyrosulphuric.
[1913 Webster] |
pyrouric acid
(gcide) | Cyanuric acid \Cyanuric acid\ (Chem.),
an organic acid, C3O3N3H3, first obtained by heating uric
acid or urea, and called pyrouric acid; afterwards obtained
from isocyanic acid. It is a white crystalline substance,
odorless and almost tasteless; -- called also tricarbimide.
[1913 Webster] |
sulphuric acid
(gcide) | Sulphur \Sul"phur\, n. [L., better sulfur: cf. F. soufre.]
1. (Chem.) A nonmetallic element occurring naturally in large
quantities, either combined as in the sulphides (as
pyrites) and sulphates (as gypsum), or native in volcanic
regions, in vast beds mixed with gypsum and various earthy
materials, from which it is melted out. Symbol S. Atomic
weight 32. The specific gravity of ordinary octohedral
sulphur is 2.05; of prismatic sulphur, 1.96.
[1913 Webster]
Note: It is purified by distillation, and is obtained as a
lemon-yellow powder (by sublimation), called flour, or
flowers, of sulphur, or in cast sticks called roll
sulphur, or brimstone. It burns with a blue flame and a
peculiar suffocating odor. It is an ingredient of
gunpowder, is used on friction matches, and in medicine
(as a laxative and insecticide), but its chief use is
in the manufacture of sulphuric acid. Sulphur can be
obtained in two crystalline modifications, in
orthorhombic octahedra, or in monoclinic prisms, the
former of which is the more stable at ordinary
temperatures. Sulphur is the type, in its chemical
relations, of a group of elements, including selenium
and tellurium, called collectively the sulphur group,
or family. In many respects sulphur resembles oxygen.
[1913 Webster]
2. (Zool.) Any one of numerous species of yellow or orange
butterflies of the subfamily Pierinae; as, the clouded
sulphur (Eurymus philodice syn. Colias philodice),
which is the common yellow butterfly of the Eastern United
States.
[1913 Webster]
Amorphous sulphur (Chem.), an elastic variety of sulphur of
a resinous appearance, obtained by pouring melted sulphur
into water. On standing, it passes back into a brittle
crystalline modification.
Liver of sulphur. (Old Chem.) See Hepar.
Sulphur acid. (Chem.) See Sulphacid.
Sulphur alcohol. (Chem.) See Mercaptan.
Sulphur auratum [L.] (Old Chem.), a golden yellow powder,
consisting of antimonic sulphide, Sb2S5, -- formerly a
famous nostrum.
Sulphur base (Chem.), an alkaline sulphide capable of
acting as a base in the formation of sulphur salts
according to the old dual theory of salts. [Archaic]
Sulphur dioxide (Chem.), a colorless gas, SO2, of a
pungent, suffocating odor, produced by the burning of
sulphur. It is employed chiefly in the production of
sulphuric acid, and as a reagent in bleaching; -- called
also sulphurous anhydride, and formerly {sulphurous
acid}.
Sulphur ether (Chem.), a sulphide of hydrocarbon radicals,
formed like the ordinary ethers, which are oxides, but
with sulphur in the place of oxygen.
Sulphur salt (Chem.), a salt of a sulphacid; a sulphosalt.
Sulphur showers, showers of yellow pollen, resembling
sulphur in appearance, often carried from pine forests by
the wind to a great distance.
Sulphur trioxide (Chem.), a white crystalline solid, SO3,
obtained by oxidation of sulphur dioxide. It dissolves in
water with a hissing noise and the production of heat,
forming sulphuric acid, and is employed as a dehydrating
agent. Called also sulphuric anhydride, and formerly
sulphuric acid.
Sulphur whale. (Zool.) See Sulphur-bottom.
Vegetable sulphur (Bot.), lycopodium powder. See under
Lycopodium.
[1913 Webster]Sulphuric \Sul*phu"ric\, a. [Cf. F. sulfurique.]
1. Of or pertaining to sulphur; as, a sulphuric smell.
[1913 Webster]
2. (Chem.) Derived from, or containing, sulphur;
specifically, designating those compounds in which the
element has a higher valence as contrasted with the
sulphurous compounds; as, sulphuric acid.
[1913 Webster]
Sulphuric acid.
(a) Sulphur trioxide (see under Sulphur); -- formerly so
called on the dualistic theory of salts. [Obs.]
(b) A heavy, corrosive, oily liquid, H2SO4, colorless
when pure, but usually yellowish or brownish, produced
by the combined action of sulphur dioxide, oxygen
(from the air), steam, and nitric fumes. It attacks
and dissolves many metals and other intractable
substances, sets free most acids from their salts, and
is used in the manufacture of hydrochloric and nitric
acids, of soda, of bleaching powders, etc. It is also
powerful dehydrating agent, having a strong affinity
for water, and eating and corroding paper, wood,
clothing, etc. It is thus used in the manufacture of
ether, of imitation parchment, and of nitroglycerin.
It is also used in etching iron, in removing iron
scale from forgings, in petroleum refining, etc., and
in general its manufacture is the most important and
fundamental of all the chemical industries. Formerly
called vitriolic acid, and now popularly vitriol,
and oil of vitriol.
Fuming sulphuric acid, or Nordhausen sulphuric acid. See
Disulphuric acid, under Disulphuric.
Sulphuric anhydride, sulphur trioxide. See under Sulphur.
Sulphuric ether, common anaesthetic ether; -- so called
because made by the catalytic action of sulphuric acid on
alcohol. See Ether, 3
(a) .
[1913 Webster] |
Sulphuric acid
(gcide) | Sulphur \Sul"phur\, n. [L., better sulfur: cf. F. soufre.]
1. (Chem.) A nonmetallic element occurring naturally in large
quantities, either combined as in the sulphides (as
pyrites) and sulphates (as gypsum), or native in volcanic
regions, in vast beds mixed with gypsum and various earthy
materials, from which it is melted out. Symbol S. Atomic
weight 32. The specific gravity of ordinary octohedral
sulphur is 2.05; of prismatic sulphur, 1.96.
[1913 Webster]
Note: It is purified by distillation, and is obtained as a
lemon-yellow powder (by sublimation), called flour, or
flowers, of sulphur, or in cast sticks called roll
sulphur, or brimstone. It burns with a blue flame and a
peculiar suffocating odor. It is an ingredient of
gunpowder, is used on friction matches, and in medicine
(as a laxative and insecticide), but its chief use is
in the manufacture of sulphuric acid. Sulphur can be
obtained in two crystalline modifications, in
orthorhombic octahedra, or in monoclinic prisms, the
former of which is the more stable at ordinary
temperatures. Sulphur is the type, in its chemical
relations, of a group of elements, including selenium
and tellurium, called collectively the sulphur group,
or family. In many respects sulphur resembles oxygen.
[1913 Webster]
2. (Zool.) Any one of numerous species of yellow or orange
butterflies of the subfamily Pierinae; as, the clouded
sulphur (Eurymus philodice syn. Colias philodice),
which is the common yellow butterfly of the Eastern United
States.
[1913 Webster]
Amorphous sulphur (Chem.), an elastic variety of sulphur of
a resinous appearance, obtained by pouring melted sulphur
into water. On standing, it passes back into a brittle
crystalline modification.
Liver of sulphur. (Old Chem.) See Hepar.
Sulphur acid. (Chem.) See Sulphacid.
Sulphur alcohol. (Chem.) See Mercaptan.
Sulphur auratum [L.] (Old Chem.), a golden yellow powder,
consisting of antimonic sulphide, Sb2S5, -- formerly a
famous nostrum.
Sulphur base (Chem.), an alkaline sulphide capable of
acting as a base in the formation of sulphur salts
according to the old dual theory of salts. [Archaic]
Sulphur dioxide (Chem.), a colorless gas, SO2, of a
pungent, suffocating odor, produced by the burning of
sulphur. It is employed chiefly in the production of
sulphuric acid, and as a reagent in bleaching; -- called
also sulphurous anhydride, and formerly {sulphurous
acid}.
Sulphur ether (Chem.), a sulphide of hydrocarbon radicals,
formed like the ordinary ethers, which are oxides, but
with sulphur in the place of oxygen.
Sulphur salt (Chem.), a salt of a sulphacid; a sulphosalt.
Sulphur showers, showers of yellow pollen, resembling
sulphur in appearance, often carried from pine forests by
the wind to a great distance.
Sulphur trioxide (Chem.), a white crystalline solid, SO3,
obtained by oxidation of sulphur dioxide. It dissolves in
water with a hissing noise and the production of heat,
forming sulphuric acid, and is employed as a dehydrating
agent. Called also sulphuric anhydride, and formerly
sulphuric acid.
Sulphur whale. (Zool.) See Sulphur-bottom.
Vegetable sulphur (Bot.), lycopodium powder. See under
Lycopodium.
[1913 Webster]Sulphuric \Sul*phu"ric\, a. [Cf. F. sulfurique.]
1. Of or pertaining to sulphur; as, a sulphuric smell.
[1913 Webster]
2. (Chem.) Derived from, or containing, sulphur;
specifically, designating those compounds in which the
element has a higher valence as contrasted with the
sulphurous compounds; as, sulphuric acid.
[1913 Webster]
Sulphuric acid.
(a) Sulphur trioxide (see under Sulphur); -- formerly so
called on the dualistic theory of salts. [Obs.]
(b) A heavy, corrosive, oily liquid, H2SO4, colorless
when pure, but usually yellowish or brownish, produced
by the combined action of sulphur dioxide, oxygen
(from the air), steam, and nitric fumes. It attacks
and dissolves many metals and other intractable
substances, sets free most acids from their salts, and
is used in the manufacture of hydrochloric and nitric
acids, of soda, of bleaching powders, etc. It is also
powerful dehydrating agent, having a strong affinity
for water, and eating and corroding paper, wood,
clothing, etc. It is thus used in the manufacture of
ether, of imitation parchment, and of nitroglycerin.
It is also used in etching iron, in removing iron
scale from forgings, in petroleum refining, etc., and
in general its manufacture is the most important and
fundamental of all the chemical industries. Formerly
called vitriolic acid, and now popularly vitriol,
and oil of vitriol.
Fuming sulphuric acid, or Nordhausen sulphuric acid. See
Disulphuric acid, under Disulphuric.
Sulphuric anhydride, sulphur trioxide. See under Sulphur.
Sulphuric ether, common anaesthetic ether; -- so called
because made by the catalytic action of sulphuric acid on
alcohol. See Ether, 3
(a) .
[1913 Webster] |
Uric acid
(gcide) | Uric \U"ric\, a. [Gr. ? urine: cf. F. urique. See Urine.]
(Physiol. Chem.)
Of or pertaining to urine; obtained from urine; as, uric
acid.
[1913 Webster]
Uric acid, a crystalline body, present in small quantity in
the urine of man and most mammals. Combined in the form of
urate of ammonia, it is the chief constituent of the urine
of birds and reptiles, forming the white part. Traces of
it are also found in the various organs of the body. It is
likewise a common constituent, either as the free acid or
as a urate, of urinary or renal calculi and of the
so-called gouty concretions. From acid urines, uric acid
is frequently deposited, on standing in a cool place, in
the form of a reddish yellow sediment, nearly always
crystalline. Chemically, it is composed of carbon,
hydrogen, nitrogen, and oxygen, C5H4N4O3, and by
decomposition yields urea, among other products. It can be
made synthetically by heating together urea and glycocoll.
It was formerly called also lithic acid, in allusion to
its occurrence in stone, or calculus.
[1913 Webster] |
barbituric acid
(wn) | barbituric acid
n 1: a white crystalline acid derived from pyrimidine; used in
preparing barbiturate drugs [syn: barbituric acid,
malonylurea] |
cyanuric acid
(wn) | cyanuric acid
n 1: a trimer of cyanic acid |
diethylbarbituric acid
(wn) | diethylbarbituric acid
n 1: a barbiturate used as a hypnotic [syn: barbital,
veronal, barbitone, diethylbarbituric acid,
diethylmalonylurea] |
lauric acid
(wn) | lauric acid
n 1: a crystalline fatty acid occurring as glycerides in natural
fats and oils (especially coconut oil and palm-kernel oil)
[syn: lauric acid, dodecanoic acid] |
sulfuric acid
(wn) | sulfuric acid
n 1: (H2SO4) a highly corrosive acid made from sulfur dioxide;
widely used in the chemical industry [syn: vitriol, {oil
of vitriol}, sulfuric acid, sulphuric acid] |
sulphuric acid
(wn) | sulphuric acid
n 1: (H2SO4) a highly corrosive acid made from sulfur dioxide;
widely used in the chemical industry [syn: vitriol, {oil
of vitriol}, sulfuric acid, sulphuric acid] |
|