| slovo | definícia |
nitrogen
(encz) | nitrogen,dusík |
Nitrogen
(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] |
nitrogen
(wn) | nitrogen
n 1: a common nonmetallic element that is normally a colorless
odorless tasteless inert diatomic gas; constitutes 78
percent of the atmosphere by volume; a constituent of all
living tissues [syn: nitrogen, N, atomic number 7] |
nitrogen
(elements) | nitrogen
Symbol: N
Atomic number: 7
Atomic weight: 14.0067
Colourless, gaseous element which belongs to group 15 of the periodic
table. Constitutes ~78% of the atmosphere and is an essential part of
the
ecosystem. Nitrogen for industrial purposes is acquired by the
fractional
distillation of liquid air. Chemically inactive, reactive generally only
at high temperatures or in electrical discharges. It was discovered in
1772 by D. Rutherford.
|
| | podobné slovo | definícia |
liquid nitrogen
(encz) | liquid nitrogen, n: |
nitrogen balance
(encz) | nitrogen balance, n: |
nitrogen cycle
(encz) | nitrogen cycle,koloběh dusíku |
nitrogen dioxide
(encz) | nitrogen dioxide, n: |
nitrogen fixation
(encz) | nitrogen fixation,fixace dusíku [eko.] RNDr. Pavel Piskač |
nitrogen mustard
(encz) | nitrogen mustard, n: |
nitrogen narcosis
(encz) | nitrogen narcosis, n: |
nitrogen oxide
(encz) | nitrogen oxide, n: |
nitrogen trichloride
(encz) | nitrogen trichloride, n: |
nitrogen-fixing microorganism
(encz) | nitrogen-fixing microorganism,nitrogenní mikroorganismus [eko.] RNDr.
Pavel Piskač |
nitrogenase
(encz) | nitrogenase, n: |
nitrogenise
(encz) | nitrogenise, v: |
nitrogenize
(encz) | nitrogenize, v: |
nitrogenous
(encz) | nitrogenous,dusíkový |
nonnitrogenous
(encz) | nonnitrogenous, |
organic nitrogen
(encz) | organic nitrogen,organický dusík [eko.] RNDr. Pavel Piskač |
nitrogenní mikroorganismus
(czen) | nitrogenní mikroorganismus,nitrogen-fixing microorganism[eko.] RNDr.
Pavel Piskač |
blood urea nitrogen
(gcide) | BUN \BUN\ n. [acronym] (Med.)
same as
blood urea nitrogen; the concentration of nitrogen in blood
present in the form of urea; -- used as a measure of
kidney function.
Note: Blood usually contains 10 to 15 mg of nitrogen per 100
ml in the form of urea. --Stedman.
[PJC] |
Nitrogen
(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] |
Nitrogenize
(gcide) | Nitrogenize \Ni"tro*gen*ize\, v. t. [imp. & p. p.
Nitrogenized; p. pr. & vb. n. Nitrogenizing.] (Chem.)
To combine, or impregnate, with nitrogen or its compounds.
[1913 Webster] |
Nitrogenized
(gcide) | Nitrogenize \Ni"tro*gen*ize\, v. t. [imp. & p. p.
Nitrogenized; p. pr. & vb. n. Nitrogenizing.] (Chem.)
To combine, or impregnate, with nitrogen or its compounds.
[1913 Webster] |
Nitrogenizing
(gcide) | Nitrogenize \Ni"tro*gen*ize\, v. t. [imp. & p. p.
Nitrogenized; p. pr. & vb. n. Nitrogenizing.] (Chem.)
To combine, or impregnate, with nitrogen or its compounds.
[1913 Webster] |
Nitrogenous
(gcide) | Nitrogenous \Ni*trog"e*nous\, a. (Chem.)
Of, pertaining to, or resembling, nitrogen; as, a nitrogenous
principle; nitrogenous compounds.
[1913 Webster]
Nitrogenous foods. See 2d Note under Food, n., 1.
[1913 Webster] Nitroglycerin |
Nitrogenous foods
(gcide) | Nitrogenous \Ni*trog"e*nous\, a. (Chem.)
Of, pertaining to, or resembling, nitrogen; as, a nitrogenous
principle; nitrogenous compounds.
[1913 Webster]
Nitrogenous foods. See 2d Note under Food, n., 1.
[1913 Webster] Nitroglycerin |
Nonnitrogenous
(gcide) | Nonnitrogenous \Non`ni*trog"e*nous\, a.
Devoid of nitrogen; as, a nonnitrogenous principle; a
nonnitrogenous food. See the Note under Food, n., 1.
[1913 Webster] |
protoxide of nitrogen
(gcide) | Protoxide \Pro*tox"ide\, n. [Proto- + oxide: cf. F. protoxide.]
(Chem.)
That one of a series of oxides having the lowest proportion
of oxygen. See Proto-, 2
(b) .
[1913 Webster]
protoxide of nitrogen, laughing gas, now called
hyponitrous oxide. See under Laughing.
[1913 Webster] |
liquid nitrogen
(wn) | liquid nitrogen
n 1: nitrogen in a liquid state |
nitrogen balance
(wn) | nitrogen balance
n 1: the balance between the amount of nitrogen taken in (to the
soil or the body) and the amount given off (lost or
excreted) |
nitrogen cycle
(wn) | nitrogen cycle
n 1: the circulation of nitrogen; nitrates from the soil are
absorbed by plants which are eaten by animals that die and
decay returning the nitrogen back to the soil |
nitrogen dioxide
(wn) | nitrogen dioxide
n 1: a highly poisonous brown gas (NO2) |
nitrogen fixation
(wn) | nitrogen fixation
n 1: the assimilation of atmospheric nitrogen by soil bacteria
and its release for plant use on the death of the bacteria |
nitrogen mustard
(wn) | nitrogen mustard
n 1: a toxic compound resembling mustard gas in structure;
important in cancer treatment |
nitrogen narcosis
(wn) | nitrogen narcosis
n 1: confused or stuporous state caused by high levels of
dissolved nitrogen in the blood; "deep-sea divers can
suffer nitrogen narcosis from breathing air under high
pressure" |
nitrogen oxide
(wn) | nitrogen oxide
n 1: any of several oxides of nitrogen formed by the action of
nitric acid on oxidizable materials; present in car
exhausts |
nitrogen trichloride
(wn) | nitrogen trichloride
n 1: a yellow pungent volatile oil (trade name Agene) formerly
used for bleaching and aging flour [syn: {nitrogen
trichloride}, Agene] |
nitrogen-bearing
(wn) | nitrogen-bearing
adj 1: of or relating to or containing nitrogen [syn:
nitrogenous, nitrogen-bearing] |
nitrogen-fixing
(wn) | nitrogen-fixing
adj 1: contributing to the process of nitrogen fixation |
nitrogenase
(wn) | nitrogenase
n 1: an enzyme of nitrogen-fixing microorganisms that catalyzes
the conversion of nitrogen to ammonia |
nitrogenise
(wn) | nitrogenise
v 1: treat with nitrogen or a nitrogen compound [syn: nitrify,
nitrogenize, nitrogenise] |
nitrogenize
(wn) | nitrogenize
v 1: treat with nitrogen or a nitrogen compound [syn: nitrify,
nitrogenize, nitrogenise] |
nitrogenous
(wn) | nitrogenous
adj 1: of or relating to or containing nitrogen [syn:
nitrogenous, nitrogen-bearing] |
|