| slovo | definícia |
N2
(gcide) | Nitrogen \Ni`tro*gen\ (n[imac]"tr[-o]*j[e^]n), n. [L. nitrum
natron + -gen: cf. F. nitrog[`e]ne. See Niter.] (Chem.)
A colorless nonmetallic element of atomic number 7, tasteless
and odorless, comprising four fifths of the atmosphere by
volume in the form of molecular nitrogen (N2). It is
chemically very inert in the free state, and as such is
incapable of supporting life (hence the name azote still
used by French chemists); but it forms many important
compounds, such as ammonia, nitric acid, the cyanides, etc,
and is a constituent of all organized living tissues, animal
or vegetable. Symbol N. Atomic weight 14.007. It was formerly
regarded as a permanent noncondensible gas, but was liquefied
in 1877 by Cailletet of Paris, and Pictet of Geneva, and
boils at -195.8 [deg] C at atmospheric pressure. Liquid
nitrogen is used as a refrigerant to store delicate
materials, such as bacteria, cells, and other biological
materials.
[1913 Webster +PJC] |
N2
(gcide) | Chromophore \Chro"mo*phore\, n. [Gr. ? color + fe`rein to bear.]
(Chem.)
Any chemical group or residue (as NO2; N2; or O2) which
imparts some decided color to the compound of which it is an
ingredient.
[1913 Webster] |
| | podobné slovo | definícia |
playstation2
(encz) | playstation2,playstation2 n: romak |
playstation2
(czen) | playstation2,playstation2n: romak |
Ag2C2N2O2
(gcide) | Silver \Sil"ver\ (s[i^]l"v[~e]r), n. [OE. silver, selver,
seolver, AS. seolfor, siolfur, siolufr, silofr, sylofr; akin
to OS. silubar, OFries. selover, D. zilver, LG. sulver, OHG.
silabar, silbar, G. silber, Icel. silfr, Sw. silfver, Dan.
s["o]lv, Goth. silubr, Russ. serebro, Lith. sidabras; of
unknown origin.]
1. (Chem.) A soft white metallic element, sonorous, ductile,
very malleable, and capable of a high degree of polish. It
is found native, and also combined with sulphur, arsenic,
antimony, chlorine, etc., in the minerals argentite,
proustite, pyrargyrite, ceragyrite, etc. Silver is one of
the "noble" metals, so-called, not being easily oxidized,
and is used for coin, jewelry, plate, and a great variety
of articles. Symbol Ag (Argentum). Atomic weight 107.7.
Specific gravity 10.5.
[1913 Webster]
Note: Silver was known under the name of luna to the ancients
and also to the alchemists. Some of its compounds, as
the halogen salts, are remarkable for the effect of
light upon them, and are used in photography.
[1913 Webster]
2. Coin made of silver; silver money.
[1913 Webster]
3. Anything having the luster or appearance of silver.
[1913 Webster]
4. The color of silver.
[1913 Webster]
Note: Silver is used in the formation of many compounds of
obvious meaning; as, silver-armed, silver-bright,
silver-buskined, silver-coated, silver-footed,
silver-haired, silver-headed, silver-mantled,
silver-plated, silver-slippered, silver-sounding,
silver-studded, silver-tongued, silver-white. See
Silver, a.
[1913 Webster]
Black silver (Min.), stephanite; -- called also {brittle
silver ore}, or brittle silver glance.
Fulminating silver. (Chem.)
(a) A black crystalline substance, Ag2O.(NH3)2, obtained
by dissolving silver oxide in aqua ammonia. When dry
it explodes violently on the slightest percussion.
(b) Silver fulminate, a white crystalline substance,
Ag2C2N2O2, obtained by adding alcohol to a solution
of silver nitrate; -- also called {fulminate of
silver}. When dry it is violently explosive.
German silver. (Chem.) See under German.
Gray silver. (Min.) See Freieslebenite.
Horn silver. (Min.) See Cerargyrite.
King's silver. (O. Eng. Law) See Postfine.
Red silver, or Ruby silver. (Min.) See Proustite, and
Pyrargyrite.
Silver beater, one who beats silver into silver leaf or
silver foil.
Silver glance, or Vitreous silver. (Min.) See
Argentine.
[1913 Webster] |
C10H10N2
(gcide) | Dipyridine \Di*pyr"i*dine\ (?; 104), n. [Pref. di- + pyridine.]
(Geom.)
A polymeric form of pyridine, C10H10N2, obtained as a
colorless oil by the action of sodium on pyridine.
[1913 Webster] |
C10H14N2
(gcide) | Nicotine \Nic"o*tine\ (? or ?), n. [F. nicotine. See
Nicotian.] (Chem.)
An alkaloid which is the active principle of tobacco
(C10H14N2). It occurs in tobacco plants ({Nicotiana
tabacum} and Nicotiana rusticum) to the extent of 2 to 8%,
in combination with malic acid or citric acid. It is a
colorless, transparent, oily liquid, having an acrid odor,
and an acrid burning taste. It is intensely poisonous. The
apparently addictive effects of tobacco smoking have been
ascribed largely to the effect of nicotine, and the
controlled administration of nicotine on various forms has
been used as a technique for assisting efforts to stop the
smoking habit. --Ure.
[1913 Webster +PJC]Isonicotine \I`so*nic"o*tine\, n. [Iso- + nicotine.] (Chem.)
A crystalline, nitrogenous base, C10H14N2, isomeric with
nicotine.
[1913 Webster] |
C10H16N2O3S
(gcide) | biotin \bi"o*tin\ n.
a B vitamin (C10H16N2O3S) that aids in body growth; --
called also vitamin H and coenzyme R. It functions as a
coenzyme in many carboxylation reactions.
Note: Biotin binds tightly to the substance avidin, found in
raw egg-whites. Rats or chick on a diet high in raw
egg-white may develop skin lesions and retarded growth,
which can be prevented by adding biotin to the diet.
--[MI11]
Syn: .
[WordNet 1.5 +PJC] |
C10H8N2
(gcide) | Dipyridyl \Di*pyr"i*dyl\, n. [Pref. di- + pyridine + -yl.]
(Chem.)
A crystalline nitrogenous base, C10H8N2, obtained by the
reduction of pyridine.
[1913 Webster] |
C12H4N2O8
(gcide) | Euchroic \Eu*chro"ic\, a. [Gr. ? well-colored; e'y^ well + ?
color.] (Chem.)
Having a fine color.
[1913 Webster]
Euchroic acid (Chem.), an organic, imide acid, obtained as
a colorless crystalline substance, C12H4N2O8 by heating
an ammonium salt of mellitic acid. By reduction it is
changed to a dark blue substance (euchrone), -- hence its
name.
[1913 Webster] |
C12H8N2
(gcide) | Phenanthroline \Phe*nan"thro*line\, n. [Phenanthrene +
quinoline.] (Chem.)
Either of two metameric nitrogenous hydrocarbon bases,
C12H8N2, analogous to phenanthridine, but more highly
nitrogenized.
[1913 Webster] |
C13H12N2O
(gcide) | Flavine \Fla"vine\ (?; 104), n. (Chem.)
A yellow, crystalline, organic base, C13H12N2O, obtained
artificially.
[1913 Webster] |
C14H18N2O5
(gcide) | aspartame \aspartame\ n.
1. an artificial sweetener containing an aspartic acid
peptide, (C14H18N2O5); it is 160 times sweeter than
sucrose (cane sugar) and is used as a calorie-free
sweetener. Chemically it is
N-L-[alpha]-aspartyl-L-phenylalanine-1-methyl ester. It is
sold also under the trade name Equal.
[WordNet 1.5] |
C16H10N2O2
(gcide) | Indigo \In"di*go\, a.
Having the color of, pertaining to, or derived from, indigo.
[1913 Webster]
Indigo berry (Bot.), the fruit of the West Indian shrub
Randia aculeata, used as a blue dye.
Indigo bird (Zool.), a small North American finch
(Cyanospiza cyanea). The male is indigo blue in color.
Called also indigo bunting.
Indigo blue.
(a) The essential coloring material of commercial indigo,
from which it is obtained as a dark blue earthy powder,
with a reddish luster, C16H10N2O2, which may be
crystallized by sublimation. Indigo blue is also made
from artificial amido cinnamic acid, and from artificial
isatine; and these methods are of great commercial
importance. Called also indigotin.
(b) A dark, dull blue color like the indigo of commerce.
Indigo brown (Chem.), a brown resinous substance found in
crude indigo.
Indigo copper (Min.), covellite.
Indigo green, a green obtained from indigo.
Indigo plant (Bot.), a leguminous plant of several species
(genus Indigofera), from which indigo is prepared. The
different varieties are natives of Asia, Africa, and
America. Several species are cultivated, of which the most
important are the Indigofera tinctoria, or {common
indigo plant}, the Indigofera Anil, a larger species,
and the Indigofera disperma.
Indigo purple, a purple obtained from indigo.
Indigo red, a dyestuff, isomeric with indigo blue, obtained
from crude indigo as a dark brown amorphous powder.
Indigo snake (Zool.), the gopher snake.
Indigo white, a white crystalline powder obtained by
reduction from indigo blue, and by oxidation easily
changed back to it; -- called also indigogen.
Indigo yellow, a substance obtained from indigo.
[1913 Webster] |
C16H14N2
(gcide) | Flavaniline \Fla*van"i*line\ (? or ?; 104), n. [L. flavus yellow
+ E. aniline.] (Chem.)
A yellow, crystalline, organic dyestuff, C16H14N2, of
artifical production. It is a strong base, and is a complex
derivative of aniline and quinoline.
[1913 Webster] |
C18H30N2O2
(gcide) | butacaine \butacaine\ n.
a white crystalline ester (C18H30N2O2) that is applied to
mucous membranes as a topical anesthetic. Chemically it is
3-(di-n-butylamino)-1-propanol 4-aminobenzoate
(H2N.C6H4.CO.O.(CH2)3N(C4H9)2). It is usually used as the
sulfate salt.
Syn: butacaine sulfate.
[WordNet 1.5 +PJC] |
C19H22N2O
(gcide) | Cinchonidine \Cin*chon"i*dine\, n. [From Cinchona.] (Chem.)
One of the quinine group of alkaloids, found especially in
red cinchona bark. It is a white crystalline substance,
C19H22N2O, with a bitter taste and qualities similar to,
but weaker than, quinine; -- sometimes called also
cinchonidia.
[1913 Webster] |
C20H24N2O2
(gcide) | Quinine \Qui"nine\, n. [F. (cf. Sp. quinina), fr. Sp. quina, or
quinaquina, Peruvian bark, fr. Peruv. kina, quina, bark. Cf.
Kinic.] (Chem.)
An alkaloid extracted from the bark of several species of
cinchona (esp. Cinchona Calisaya) as a bitter white
crystalline substance, C20H24N2O2. Hence, by extension
(Med.), any of the salts of this alkaloid, as the acetate,
chloride, sulphate, etc., employed as a febrifuge or
antiperiodic. Called also quinia, quinina, etc. [Written
also chinine.]
[1913 Webster] |
C26H36N2O9
(gcide) | antimycin \an`ti*my"cin\ ([a^]n`t[i^]*m[imac]"s[i^]n), n.
1. one of several antibiotic substances produced by several
species of Streptomyces, active against various fungi.
They are used only experimentally, not in medicine. The
two best-known antimycins are antimycin A1 (C28H40N2O9)
and antimycin A3 (C26H36N2O9). They are notable for
their mechanism of action, interference with the proton
pumping mechanism of fungi.
[WordNet 1.5 +PJC] |
C28H40N2O9
(gcide) | antimycin \an`ti*my"cin\ ([a^]n`t[i^]*m[imac]"s[i^]n), n.
1. one of several antibiotic substances produced by several
species of Streptomyces, active against various fungi.
They are used only experimentally, not in medicine. The
two best-known antimycins are antimycin A1 (C28H40N2O9)
and antimycin A3 (C26H36N2O9). They are notable for
their mechanism of action, interference with the proton
pumping mechanism of fungi.
[WordNet 1.5 +PJC] |
C2H52NN2NC2H52
(gcide) | Tetrazone \Tet"ra*zone\, n. (Chem.)
Any one of a certain series of basic compounds containing a
chain of four nitrogen atoms; for example, ethyl tetrazone,
(C2H5)2N.N2.N(C2H5)2, a colorless liquid having an odor of
leeks.
[1913 Webster] Tetric |
C2N2
(gcide) | Cyanogen \Cy*an"o*gen\ (s?-?n"?-j?n), n. [Gr. ky`anos a dark
blue substance + -gen: cf. F. cyanog[`e]ne. So called because
it produced blue dyes.] (Chem.)
A colorless, inflammable, poisonous gas, C2N2, with a
peach-blossom odor, so called from its tendency to form blue
compounds; obtained by heating ammonium oxalate, mercuric
cyanide, etc. It is obtained in combination, forming an
alkaline cyanide when nitrogen or a nitrogenous compound is
strongly ignited with carbon and soda or potash. It conducts
itself like a member of the halogen group of elements, and
shows a tendency to form complex compounds. The name is also
applied to the univalent radical, CN (the half molecule of
cyanogen proper), which was one of the first compound
radicals recognized.
[1913 Webster]
Note: Cyanogen is found in the commercial substances,
potassium cyanide, or prussiate of potash, yellow
prussiate of potash, Prussian blue, Turnbull's blue,
prussic acid, etc.
[1913 Webster] |
C2N2O2H2
(gcide) | Polymeric \Pol`y*mer"ic\, a. [Poly- + Gr. ? part.] (Chem.)
Having the same percentage composition (that is, having the
same elements united in the same proportion by weight), but
different molecular weights; -- often used with with; thus,
cyanic acid (CNOH), fulminic acid (C2N2O2H2), and
cyanuric acid (C3N3O3H3), are polymeric with each other.
[1913 Webster]
Note: The figures expressing the number of atoms of each
element in a number of polymeric substances are
respectively multiples and factors of each other, or
have some simple common divisor. The relation may be
merely a numerical one, as in the example given above,
or a chemical one, as in the case of aldehyde,
paraldehyde, and metaldehyde.
[1913 Webster]
[1913 Webster] |
C3H4N2
(gcide) | Glyoxaline \Gly*ox"a*line\, n. (Chem.)
A white, crystalline, organic base, C3H4N2, produced by the
action of ammonia on glyoxal, and forming the origin of a
large class of derivatives hence, any one of the series of
which glyoxaline is a type; -- called also oxaline.
[1913 Webster] |
C3H4N2O2
(gcide) | Hydantoin \Hy*dan"to*in\, n. [Hydrogen + allantion.] (Chem.)
A derivative of urea, C3H4N2O2, obtained from allantion, as
a white, crystalline substance, with a sweetish taste; --
called also glycolyl urea.
[1913 Webster] |
C3N2H2O3
(gcide) | Parabanic \Par`a*ban"ic\, a. [Gr. ? to pass over.] (Chem.)
Pertaining to, or designating, a nitrogenous acid which is
obtained by the oxidation of uric acid, as a white
crystalline substance (C3N2H2O3); -- also called oxalyl
urea.
[1913 Webster] |
C4H12N2
(gcide) | Putrescin \Pu*tres"cin\, n. (Physiol. Chem.)
A nontoxic diamine, C4H12N2, formed in the putrefaction of
the flesh of mammals and some other animals.
[1913 Webster] |
C4H4N2
(gcide) | Pyrazine \Pyr"a*zine\, n. Also -zin \-zin\ . [Pyridine + Gr. ?
not + ? life.] (Org. Chem.)
A feebly basic solid, C4H4N2, obtained by distilling
piperazine with zinc dust, and in other ways. Also, by
extension, any of various derivatives of the same.
[Webster 1913 Suppl.] |
C4H8N2O3H2O
(gcide) | Asparagine \As*par"a*gine\, n. [Cf. F. asparagine.] (Chem.)
A white, nitrogenous, crystallizable substance,
C4H8N2O3+H2O, found in many plants, and first obtained from
asparagus. It is believed to aid in the disposition of
nitrogenous matter throughout the plant; -- called also
altheine.
[1913 Webster] |
C5H14N2
(gcide) | Neuridin \Neu"ri*din\, n. [From Neurine.] (Physiol. Chem.)
A nontoxic base, C5H14N2, found in the putrescent matters
of flesh, fish, decaying cheese, etc.
[1913 Webster] |
C6H10N2
(gcide) | Oxalethyline \Ox`al*eth"yl*ine\, n. [Oxalic + ethyl + -ine.]
A poisonous nitrogenous base (C6H10N2) obtained indirectly
from oxamide as a thick transparent oil which has a strong
narcotic odor, and a physiological action resembling that of
atropine. It is probably related to pyridine.
[1913 Webster] |
C6H5N2C6H3NH22
(gcide) | Chrysoidine \Chrys*o"["i]*dine\, n. [Gr. chryso`s gold + -oid +
-ine.] (Chem.)
An artificial, yellow, crystalline dye, C6H5N2.C6H3(NH2)2.
Also, one of a group of dyestuffs resembling chryso["i]dine
proper.
[1913 Webster] |
C6H5N2C6H5
(gcide) | Azobenzene \Az`o*ben"zene\, n. [Azo- + benzene.] (Chem.)
A substance (C6H5.N2.C6H5) derived from nitrobenzene,
forming orange red crystals which are easily fusible.
[1913 Webster] |
C6H5N2OH
(gcide) | Diazo- \Di*az"o-\ [Pref. di- + azo-] (Chem.)
A combining form (also used adjectively), meaning pertaining
to, or derived from, a series of compounds containing a
radical of two nitrogen atoms, united usually to an aromatic
radical; as, diazo-benzene, C6H5.N2.OH.
[1913 Webster]
Note: Diazo compounds are in general unstable, but are of
great importance in recent organic chemistry. They are
obtained by a partial reduction of the salts of certain
amido compounds.
[1913 Webster]
Diazo reactions (Chem.), a series of reactions whereby
diazo compounds are employed in substitution. These
reactions are of great importance in organic chemistry.
[1913 Webster] |
C6H6N2O
(gcide) | niacinamide \niacinamide\ n.
The amide of niacin (nicotinic acid), called also
nicotinamide. It was at one time called vitamin B3, and
can function to relieve nicotinic acid deficiency. Chemical
formula C6H6N2O, chemically it is 3-pyridinecarboxamide.
Syn: nicotinic acid amide, nicotinamide.
[PJC] |
C7H6N2
(gcide) | Indazole \In"da*zole\, n. [Indol + azote.] (Chem.)
A bicyclic nitrogenous compound, C7H6N2, analogous to
indole, having a benzene ring fused to a pyrazole ring;
called also indazol and benzopyrazole. It can be produced
from a diazo derivative of cinnamic acid.
[1913 Webster +PJC] |
C8H6N2
(gcide) | Cinnoline \Cin"no*line\, n. [Cinnamic + quinoline.]
A nitrogenous organic base, C8H6N2, analogous to quinoline,
obtained from certain complex diazo compounds.
[1913 Webster] |
C8H8N2O2
(gcide) | Ricinine \Ric"i*nine\, n. [L. ricinus castor-oil plant.] (Chem.)
A bitter white crystalline alkaloid (C8H8N2O2) extracted
from the seeds of the castor-oil plant ({Ricinus
communalis}). Called also ricidine. Ingestion may cause
vomiting and various other toxic reactions, including liver
and kidney damage, convulsions, hypotension, and death.
[1913 Webster +PJC] |
CnH2n2
(gcide) | alkane \alkane\ n. (Chem.)
a non-aromatic saturated acyclic hydrocarbon with the general
formula CnH(2n+2). A member of the alkane series.
[WordNet 1.5]alkane series \alkane series\ n. (Chem.)
a series of acyclic non-aromatic saturated hydrocarbons with
the general formula CnH(2n+2). They include methane,
ethane, propane, butane, and the paraffins.
Syn: methane series, alkane series, paraffin
[WordNet 1.5 PC] |
H2C2N2O2
(gcide) | Fulmiaic \Ful*mia"ic\, a. [Cf. F. fulminique.]
Pertaining to fulmination; detonating; specifically (Chem.),
pertaining to, derived from, or denoting, an acid, so called;
as, fulminic acid.
[1913 Webster]
Fulminic acid (Chem.), a complex acid, H2C2N2O2, isomeric
with cyanic and cyanuric acids, and not known in the free
state, but forming a large class of highly explosive
salts, the fulminates. Of these, mercuric fulminate, the
most common, is used, mixed with niter, to fill percussion
caps, charge cartridges, etc. Fulminic acid is made by the
action of nitric acid on alcohol.
[1913 Webster] |
H2N2Os2O5
(gcide) | Osmiamic \Os`mi*am"ic\, a. [Osmium + amido.] (Chem.)
Of, pertaining to, or designating, a nitrogenous acid of
osmium, H2N2Os2O5, forming a well-known series of yellow
salts.
[1913 Webster] |
N2O5
(gcide) | Nitric \Ni"tric\, a. [Cf. F. nitrique. See Niter.] (Chem.)
Of, pertaining to, or containing, nitrogen; specifically,
designating any one of those compounds in which, as
contrasted with nitrous compounds, the element has a higher
valence; as, nitric oxide; nitric acid.
[1913 Webster]
Nitric acid, a colorless or yellowish liquid obtained by
distilling a nitrate with sulphuric acid. It is powerfully
corrosive, being a strong acid, and in decomposition a
strong oxidizer.
Nitric anhydride, a white crystalline oxide of nitrogen
(N2O5), called nitric pentoxide, and regarded as the
anhydride of nitric acid.
Nitric oxide, a colorless poisous gas (NO) obtained by
treating nitric acid with copper. On contact with the air
or with oxygen, it becomes reddish brown from the
formation of nitrogen dioxide (NO2, also called nitric
dioxide or nitric peroxide).
[1913 Webster] |
PN2H
(gcide) | Phospham \Phos"pham\, n. [Phosphorus + ammonia.] (Chem.)
An inert amorphous white powder, PN2H, obtained by passing
ammonia over heated phosphorus. [Spelt also phosphame.] --
Phos"pham"ic, a.
[1913 Webster] |
win2k
(foldoc) | Windows 2000
NT5
W2K
Win2K
Windows 2K
Windows NT 5
(Win2k, W2k, NT5, Windows NT 5.0) An
operating system developed by Microsoft Corporation for
PCs and servers, as the successor to Windows NT 4.0.
Early beta versions were referred to as "Windows NT 5.0".
Windows 2000 was officially released on 2000-02-17.
Windows 2000 is most commonly used on Intel x86 and
Pentium processors, with a DEC Alpha version rumoured.
Unlike Windows NT 4.0, Windows 2000 is not available for
PowerPC or MIPS.
Windows 2000's user interface is very similar to {Windows
95} or Windows NT 4.0 with integrated Internet Explorer, or
to Windows 98.
It is available in four flavours:
- Professional: the client version, meant for desktop
workstations, successor to Windows NT Workstation.
- Server: "entry-level" server, designed for small
deployments, and departmental file, print, or intranet
servers.
- Advanced Server: high throughput, larger scale servers
and applications, and small to medium scale websites.
- Data Center Server: software for large-scale server
clusters (in development as of 2000-03-14).
New features in Windows 2000 include:
- Active Directory.
- Greatly improved built-in security mechanisms, including
Kerberos-based authentication, public key support, an
encrypting file system, and IPsec support.
- Integrated web browser - Internet Explorer 5.0.
- Integrated web server - IIS 5.0
- Terminal services for displaying application interfaces on
remote computers (similar to X-Windows).
- File protection that prevents user programs from
accidentally deleting or overwriting critical system files.
- Improved hardware support, including Plug-and-Play, DVD,
IEEE-1394 (FireWire), USB, infra-red, PCMCIA, ACPI,
laptop computers.
- Improved user interface, including a single point to control
the entire system.
- Improved management tools, including remote administration.
Minimum system requirements, according to Microsoft, are
Pentium-133 MHz CPU, 64 MB RAM, 650 MB of {hard
disk} space. These are for W2K Professional, others require
more.
Many operating systems compete with Windows 2000, including
the Apple MacOS, Linux, FreeBSD, OpenBSD, NetBSD,
Sun Solaris, IBM AIX, Hewlett-Packard HP-UX, SGI
Irix. Novell's NDS also provides a service similar to
Active Directory.
Windows 2000 will be followed by Windows XP Professional and
Windows 2002.
(http://microsoft.com/windows2000/).
(2002-01-28)
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