| slovo | definícia |
oxygen
(encz) | oxygen,kyslík n: |
Oxygen
(gcide) | Oxygen \Ox"y*gen\, n. [F. oxyg[`e]ne, from Gr. 'oxy`s sharp,
acid + root of gi`gnesqai to be born. So called because
originally supposed to be an essential part of every acid.]
[1913 Webster]
1. (Chem.) A colorless, tasteless, odorless, gaseous element
of atomic number 8, occurring in the free state in the
atmosphere, of which it forms about 23 per cent by weight
and about 21 per cent by volume, being slightly heavier
than nitrogen. Symbol O. Atomic weight 15.9994.
[1913 Webster +PJC]
Note: It occurs combined in immense quantities, forming eight
ninths by weight of water, and probably one half by
weight of the entire solid crust of the globe, being an
ingredient of silica, the silicates, sulphates,
carbonates, nitrates, etc. Oxygen combines with all
elements (except fluorine), forming oxides, bases,
oxyacid anhydrides, etc., the process in general being
called oxidation, of which combustion is only an
intense modification. At ordinary temperatures with
most substances it is moderately active, but at higher
temperatures it is one of the most violent and powerful
chemical agents known. It is indispensable in
respiration, and in general is the most universally
active and efficient element. It may be prepared in the
pure state by heating potassium chlorate.
[1913 Webster] This element (called dephlogisticated
air by Priestley) was named oxygen by Lavoisier because
he supposed it to be a constituent of all acids. This
is not so in the case of a very few acids (as
hydrochloric, hydrobromic, hydric sulphide, etc.), but
these do contain elements analogous to oxygen in
property and action. Moreover, the fact that most
elements approach the nearer to acid qualities in
proportion as they are combined with more oxygen, shows
the great accuracy and breadth of Lavoisier's
conception of its nature.
[1913 Webster]
2. Chlorine used in bleaching. [Manufacturing name]
[1913 Webster] |
oxygen
(wn) | oxygen
n 1: a nonmetallic bivalent element that is normally a colorless
odorless tasteless nonflammable diatomic gas; constitutes
21 percent of the atmosphere by volume; the most abundant
element in the earth's crust [syn: oxygen, O, {atomic
number 8}] |
oxygen
(elements) | oxygen
Symbol: O
Atomic number: 8
Atomic weight: 15.9994
A colourless, odourless gaseous element belonging to group 16 of the
periodic table. It is the most abundant element present in the earth's
crust. It also makes up 20.8% of the Earth's atmosphere. For industrial
purposes, it is separated from liquid air by fractional distillation. It
is used in high temperature welding, and in breathing. It commonly comes
in the form of Oxygen, but is found as Ozone in the upper atmosphere. It
was discovered by Priestley in 1774.
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| | podobné slovo | definícia |
biochemical oxygen demand (bod)
(encz) | biochemical oxygen demand (BOD),biochemická spotřeba kyslíku
(BSK) [eko.] RNDr. Pavel Piskačbiochemical oxygen demand (BOD),BSB biochemická spotřeba kyslíku
(něm.) [eko.] RNDr. Pavel Piskač |
chemical oxygen demand (cod)
(encz) | chemical oxygen demand (COD),COD chemická spotřeba kyslíku
(angl.) [eko.] RNDr. Pavel Piskačchemical oxygen demand (COD),CSV chemická spotřeba kyslíku
(něm.) [eko.] RNDr. Pavel Piskačchemical oxygen demand (COD),chemická spotřeba kyslíku
(CHSK) [eko.] RNDr. Pavel Piskač |
cyclooxygenase
(encz) | cyclooxygenase, n: |
cyclooxygenase-1
(encz) | cyclooxygenase-1, n: |
cyclooxygenase-2
(encz) | cyclooxygenase-2, n: |
deoxygenation
(encz) | deoxygenation,dezoxygenace (vody) [eko.] RNDr. Pavel Piskač |
deoxygenation coefficient
(encz) | deoxygenation coefficient,dezoxygenační součinitel [eko.] RNDr. Pavel
Piskač |
deoxygenation factor
(encz) | deoxygenation factor,dezoxygenační součinitel [eko.] RNDr. Pavel Piskač |
liquid oxygen
(encz) | liquid oxygen, n: |
oxygen acid
(encz) | oxygen acid, n: |
oxygen curve
(encz) | oxygen curve,kyslíková čára (hydrochemie) [eko.] RNDr. Pavel Piskač |
oxygen debt
(encz) | oxygen debt, n: |
oxygen deficit
(encz) | oxygen deficit,deficit kyslíku (ve vodě) [eko.] RNDr. Pavel Piskač |
oxygen demand
(encz) | oxygen demand,spotřeba kyslíku (hydrochemie) [eko.] RNDr. Pavel Piskač |
oxygen mask
(encz) | oxygen mask,kyslíková maska luke |
oxygen sag curve
(encz) | oxygen sag curve,kyslíkový průhyb (hydrochemie) [eko.] RNDr. Pavel
Piskač |
oxygen saturation
(encz) | oxygen saturation,nasycení kyslíkem (vody) [eko.] RNDr. Pavel Piskač |
oxygen saturation index
(encz) | oxygen saturation index,index nasycení kyslíkem (vody) [eko.] RNDr.
Pavel Piskač |
oxygen tent
(encz) | oxygen tent,kyslíkový stan Zdeněk Brož |
oxygenase
(encz) | oxygenase, n: |
oxygenate
(encz) | oxygenate,okysličovat |
oxygenated
(encz) | oxygenated,okysličený Jaroslav Šedivý |
oxygenating
(encz) | oxygenating,okysličování Jaroslav Šedivý |
oxygenation
(encz) | oxygenation,okysličení n: Zdeněk Brožoxygenation,okysličování lukeoxygenation,oxygenace n: Zdeněk Brož |
oxygenise
(encz) | oxygenise, v: |
oxygenize
(encz) | oxygenize,okysličovat v: Zdeněk Brož |
reoxygenation
(encz) | reoxygenation,reoxygenace (vody) [eko.] RNDr. Pavel Piskač |
theoretical oxygen demand (tod)
(encz) | theoretical oxygen demand (TOD),teoretická spotřeba kyslíku
(TSK) [eko.] RNDr. Pavel Piskačtheoretical oxygen demand (TOD),TOD teoretická spotřeba kyslíku
(angl.) [eko.] RNDr. Pavel Piskačtheoretical oxygen demand (TOD),TSK teoretická spotřeba
kyslíku [eko.] RNDr. Pavel Piskačtheoretical oxygen demand (TOD),TSV teoretická spotřeba kyslíku
(něm.) [eko.] RNDr. Pavel Piskač |
unoxygenated
(encz) | unoxygenated, adj: |
dezoxygenace (vody)
(czen) | dezoxygenace (vody),deoxygenation[eko.] RNDr. Pavel Piskač |
dezoxygenační součinitel
(czen) | dezoxygenační součinitel,deoxygenation coefficient[eko.] RNDr. Pavel
Piskačdezoxygenační součinitel,deoxygenation factor[eko.] RNDr. Pavel Piskač |
high performance-molecular sieve oxygen generation system
(czen) | High Performance-Molecular Sieve Oxygen Generation System,HP-MSOGS[zkr.]
[voj.] Zdeněk Brož a automatický překlad |
on-board oxygen generation system
(czen) | On-Board Oxygen Generation System,OBOGS[zkr.] [voj.] Zdeněk Brož a
automatický překlad |
oxygenace
(czen) | oxygenace,oxygenationn: Zdeněk Brož |
reoxygenace (vody)
(czen) | reoxygenace (vody),reoxygenation[eko.] RNDr. Pavel Piskač |
Deoxygenate
(gcide) | Deoxygenate \De*ox"y*gen*ate\, v. t. (Chem.)
To deoxidize. [Obs.]
[1913 Webster] |
Deoxygenation
(gcide) | Deoxygenation \De*ox`y*gen*a"tion\, n. (Chem.)
The act or operation of depriving of oxygen.
[1913 Webster] |
Deoxygenize
(gcide) | Deoxygenize \De*ox"y*gen*ize\, v. t. (Chem.)
To deoxidize.
[1913 Webster] |
Disoxygenate
(gcide) | Disoxygenate \Dis*ox"y*gen*ate\, v. t. (Chem.)
To deprive of oxygen; to deoxidize. [R.]
[1913 Webster] |
Disoxygenation
(gcide) | Disoxygenation \Dis*ox`y*gen*a"tion\, n. (Chem.)
Deoxidation. [R.]
[1913 Webster] |
Hyperoxygenated
(gcide) | Hyperoxygenated \Hy`per*ox"y*gen*a`ted\, Hyperoxygenized
\Hy`per*ox"y*gen*ized\, a. (Chem.)
Combined with a relatively large amount of oxygen; -- said of
higher oxides. [Obs.]
[1913 Webster] |
Hyperoxygenized
(gcide) | Hyperoxygenated \Hy`per*ox"y*gen*a`ted\, Hyperoxygenized
\Hy`per*ox"y*gen*ized\, a. (Chem.)
Combined with a relatively large amount of oxygen; -- said of
higher oxides. [Obs.]
[1913 Webster] |
nonoxygenated
(gcide) | nonoxygenated \non`ox"y*gen*a`ted\, a. (Chem., Physiol.)
Not oxygenated.
[PJC] |
Nonoxygenous
(gcide) | Nonoxygenous \Non`ox*yg"e*nous\, a. (Chem.)
Without oxygen; characterized by the absence of oxygen; as, a
nonoxygenous alkaloid.
[1913 Webster] |
Oxygen
(gcide) | Oxygen \Ox"y*gen\, n. [F. oxyg[`e]ne, from Gr. 'oxy`s sharp,
acid + root of gi`gnesqai to be born. So called because
originally supposed to be an essential part of every acid.]
[1913 Webster]
1. (Chem.) A colorless, tasteless, odorless, gaseous element
of atomic number 8, occurring in the free state in the
atmosphere, of which it forms about 23 per cent by weight
and about 21 per cent by volume, being slightly heavier
than nitrogen. Symbol O. Atomic weight 15.9994.
[1913 Webster +PJC]
Note: It occurs combined in immense quantities, forming eight
ninths by weight of water, and probably one half by
weight of the entire solid crust of the globe, being an
ingredient of silica, the silicates, sulphates,
carbonates, nitrates, etc. Oxygen combines with all
elements (except fluorine), forming oxides, bases,
oxyacid anhydrides, etc., the process in general being
called oxidation, of which combustion is only an
intense modification. At ordinary temperatures with
most substances it is moderately active, but at higher
temperatures it is one of the most violent and powerful
chemical agents known. It is indispensable in
respiration, and in general is the most universally
active and efficient element. It may be prepared in the
pure state by heating potassium chlorate.
[1913 Webster] This element (called dephlogisticated
air by Priestley) was named oxygen by Lavoisier because
he supposed it to be a constituent of all acids. This
is not so in the case of a very few acids (as
hydrochloric, hydrobromic, hydric sulphide, etc.), but
these do contain elements analogous to oxygen in
property and action. Moreover, the fact that most
elements approach the nearer to acid qualities in
proportion as they are combined with more oxygen, shows
the great accuracy and breadth of Lavoisier's
conception of its nature.
[1913 Webster]
2. Chlorine used in bleaching. [Manufacturing name]
[1913 Webster] |
oxygen acids
(gcide) | Acid \Ac"id\, n.
1. A sour substance.
[1913 Webster]
2. (Chem.) One of a class of compounds, generally but not
always distinguished by their sour taste, solubility in
water, and reddening of vegetable blue or violet colors.
They are also characterized by the power of destroying the
distinctive properties of alkalies or bases, combining
with them to form salts, at the same time losing their own
peculiar properties. They all contain hydrogen, united
with a more negative element or radical, either alone, or
more generally with oxygen, and take their names from this
negative element or radical. Those which contain no oxygen
are sometimes called hydracids in distinction from the
others which are called oxygen acids or oxacids.
[1913 Webster]
Note: In certain cases, sulphur, selenium, or tellurium may
take the place of oxygen, and the corresponding
compounds are called respectively sulphur acids or
sulphacids, selenium acids, or tellurium acids.
When the hydrogen of an acid is replaced by a positive
element or radical, a salt is formed, and hence acids
are sometimes named as salts of hydrogen; as hydrogen
nitrate for nitric acid, hydrogen sulphate for
sulphuric acid, etc. In the old chemistry the name acid
was applied to the oxides of the negative or
nonmetallic elements, now sometimes called anhydrides.
[1913 Webster] |
Oxygenate
(gcide) | Oxygenate \Ox"y*gen*ate\, v. t. [imp. & p. p. Oxygenated; p.
pr. & vb. n. Oxygenating.] [Cf. F. oxyg['e]ner.] (Chem.)
To unite, or cause to combine, with oxygen; to treat with
oxygen; to oxidize; as, oxygenated water (hydrogen dioxide).
[1913 Webster] |
Oxygenated
(gcide) | Oxygenate \Ox"y*gen*ate\, v. t. [imp. & p. p. Oxygenated; p.
pr. & vb. n. Oxygenating.] [Cf. F. oxyg['e]ner.] (Chem.)
To unite, or cause to combine, with oxygen; to treat with
oxygen; to oxidize; as, oxygenated water (hydrogen dioxide).
[1913 Webster] |
oxygenated water
(gcide) | Hydrogen \Hy"dro*gen\, n. [Hydro-, 1 + -gen: cf. F.
hydrog[`e]ne. So called because water is generated by its
combustion. See Hydra.] (Chem.)
A gaseous element, colorless, tasteless, and odorless, the
lightest known substance, being fourteen and a half times
lighter than air (hence its use in filling balloons), and
over eleven thousand times lighter than water. It is very
abundant, being an ingredient of water and of many other
substances, especially those of animal or vegetable origin.
It may by produced in many ways, but is chiefly obtained by
the action of acids (as sulphuric) on metals, as zinc, iron,
etc. It is very inflammable, and is an ingredient of coal gas
and water gas. It is standard of chemical equivalents or
combining weights, and also of valence, being the typical
monad. Symbol H. Atomic weight 1.
[1913 Webster]
Note: Although a gas, hydrogen is chemically similar to the
metals in its nature, having the properties of a weak
base. It is, in all acids, the base which is replaced
by metals and basic radicals to form salts. Like all
other gases, it is condensed by great cold and pressure
to a liquid which freezes and solidifies by its own
evaporation. It is absorbed in large quantities by
certain metals (esp. palladium), forming alloy-like
compounds; hence, in view of quasi-metallic nature, it
is sometimes called hydrogenium. It is the typical
reducing agent, as opposed to oxidizers, as oxygen,
chlorine, etc.
[1913 Webster]
Bicarbureted hydrogen, an old name for ethylene.
Carbureted hydrogen gas. See under Carbureted.
Hydrogen dioxide, a thick, colorless liquid, H2O2,
resembling water, but having a bitter, sour taste,
produced by the action of acids on barium peroxide. It
decomposes into water and oxygen, and is manufactured in
large quantities for an oxidizing and bleaching agent.
Called also oxygenated water.
Hydrogen oxide, a chemical name for water, H?O.
Hydrogen sulphide, a colorless inflammable gas, H2S,
having the characteristic odor of bad eggs, and found in
many mineral springs. It is produced by the action of
acids on metallic sulphides, and is an important chemical
reagent. Called also sulphureted hydrogen.
[1913 Webster] |
Oxygenating
(gcide) | Oxygenate \Ox"y*gen*ate\, v. t. [imp. & p. p. Oxygenated; p.
pr. & vb. n. Oxygenating.] [Cf. F. oxyg['e]ner.] (Chem.)
To unite, or cause to combine, with oxygen; to treat with
oxygen; to oxidize; as, oxygenated water (hydrogen dioxide).
[1913 Webster] |
Oxygenation
(gcide) | Oxygenation \Ox`y*gen*a"tion\, n. [Cf. F. oxyg['e]nation.]
(Chem.)
The act or process of combining or of treating with oxygen;
oxidation.
[1913 Webster] |
oxygenator
(gcide) | Oxidator \Ox"i*da`tor\, n.
1. An oxidizer. [Obs.]
[1913 Webster]
2. A contrivance for causing a current of air to impinge on
the flame of the Argand lamp; -- called also oxygenator.
[1913 Webster]Oxygenator \Ox"y*gen*a`tor\, n.
An oxidizer.
[1913 Webster] |
Oxygenator
(gcide) | Oxidator \Ox"i*da`tor\, n.
1. An oxidizer. [Obs.]
[1913 Webster]
2. A contrivance for causing a current of air to impinge on
the flame of the Argand lamp; -- called also oxygenator.
[1913 Webster]Oxygenator \Ox"y*gen*a`tor\, n.
An oxidizer.
[1913 Webster] |
Oxygenic
(gcide) | Oxygenic \Ox`y*gen"ic\, a. (Chem.)
Pertaining to, containing, or resembling, oxygen; producing
oxygen.
[1913 Webster] |
Oxygenium
(gcide) | Oxygenium \Ox`y*ge"ni*um\, n. [NL.] (Chem.)
The technical name of oxygen. [R. and archaic]
[1913 Webster] |
Oxygenizable
(gcide) | Oxygenizable \Ox"y*gen*i"za*ble\, a. (Chem.)
Oxidizable.
[1913 Webster] |
Oxygenize
(gcide) | Oxygenize \Ox"y*gen*ize\, v. t. [imp. & p. p. Oxygenized; p.
pr. & vb. n. Oxygenizing.] (Chem.)
To oxidize.
[1913 Webster] |
Oxygenized
(gcide) | Oxygenize \Ox"y*gen*ize\, v. t. [imp. & p. p. Oxygenized; p.
pr. & vb. n. Oxygenizing.] (Chem.)
To oxidize.
[1913 Webster] |
Oxygenizement
(gcide) | Oxygenizement \Ox"y*gen*ize`ment\, n.
Oxidation.
[1913 Webster] |
Oxygenizing
(gcide) | Oxygenize \Ox"y*gen*ize\, v. t. [imp. & p. p. Oxygenized; p.
pr. & vb. n. Oxygenizing.] (Chem.)
To oxidize.
[1913 Webster] |
Oxygenous
(gcide) | Oxygenous \Ox*yg"e*nous\, a.
Oxygenic.
[1913 Webster] |
Semioxygenated
(gcide) | Semioxygenated \Sem`i*ox"y*gen*a`ted\, a.
Combined with oxygen only in part. --Kirwan.
[1913 Webster] |
blood-oxygenation level dependent functional magnetic resonance imaging
(wn) | blood-oxygenation level dependent functional magnetic resonance imaging
n 1: functional magnetic resonance imaging that relies on
intrinsic changes in hemoglobin oxygenation [syn: {blood-
oxygenation level dependent functional magnetic resonance
imaging}, BOLD FMRI] |
cyclooxygenase
(wn) | cyclooxygenase
n 1: either of two related enzymes that control the production
of prostaglandins and are blocked by aspirin [syn:
cyclooxygenase, Cox] |
cyclooxygenase-1
(wn) | cyclooxygenase-1
n 1: an enzyme that regulates prostaglandins that are important
for the health of the stomach lining and kidneys; "an
unfortunate side effect of NSAIDs is that they block Cox-1"
[syn: cyclooxygenase-1, Cox-1] |
cyclooxygenase-2
(wn) | cyclooxygenase-2
n 1: an enzyme that makes prostaglandins that cause inflammation
and pain and fever; "the beneficial effects of NSAIDs
result from their ability to block Cox-2" [syn:
cyclooxygenase-2, Cox-2] |
deoxygenate
(wn) | deoxygenate
v 1: remove oxygen from (water) |
liquid oxygen
(wn) | liquid oxygen
n 1: a bluish translucent magnetic liquid obtained by
compressing gaseous oxygen and then cooling it below its
boiling point; used as an oxidizer in rocket propellants
[syn: liquid oxygen, LOX] |
oxygen acid
(wn) | oxygen acid
n 1: any acid that contains oxygen [syn: oxyacid, {oxygen
acid}] |
oxygen debt
(wn) | oxygen debt
n 1: a cumulative deficit of oxygen resulting from intense
exercise; the deficit must be made up when the body returns
to rest |
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