Crossword clues for nitrogen
- Gaseous element
- Primary constituent of air
- Air, mostly
- Ammonia component
- The atmosphere, mostly
- Product of star fusion
- Nearly 80% of the atmosphere
- Much of the air
- Main constituent of the air
- Ingredient of air
- Four-fifths of the earth's atmosphere
- Explosive element
- Element in laughing gas
- Discovery of Daniel Rutherford
- Biggest part of air
- Almost 80% of the Earth's atmosphere
- Alkaloid constituent, by definition
- About 78 percent of our atmosphere
- It's in the air
- A common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas
- A constituent of all living tissues
- Constitutes 78 percent of the atmosphere by volume
- Most of the atmosphere
- Four-fifths of the atmosphere
- Main element of air
- Common gas, N
- Changed ringtone element
- Element identified by Italian fellow endlessly in news
- New ringtone is a gas!
- Ring tone playing part of air
- Ridiculous ringtone is a gas!
- Patriot's worship given to Biblical figure
- Jangly ringtone air’s principal composer?
- Having recalled iron in the end, I start to remember another metal element
- Something in the air
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
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.
Douglas Harper's Etymology Dictionary
1794, from French nitrogène, coined 1790 by French chemist Jean Antoine Chaptal (1756-1832), from comb. form of Greek nitron "sodium carbonate" (see nitro-) + French gène "producing," from Greek -gen "giving birth to" (see -gen). The gas was identified in part by analysis of nitre. Earlier name (1772) was mephitic air, and Lavoisier called it azote (see azo-).
n. 1 (context uncountable English) A chemical element (''symbol'' N) with an atomic number of 7 and atomic weight of 14.0067. 2 (context uncountable English) Molecular nitrogen (N2), a colorless, odorless gas at room temperature. 3 (context countable English) A specific nitrogen within a chemical formula, or a specific isotope of nitrogen
n. 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: N, atomic number 7]
Nitrogen is a chemical element with symbol N and atomic number 7. It is the lightest pnictogen, and at room temperature it is a transparent, odorless diatomic gas. Nitrogen is a common element in the universe, estimated at about seventh in total abundance in the Milky Way and the Solar System. On Earth, the element forms about 78% of Earth's atmosphere and is the most abundant uncombined element. The element nitrogen was discovered as a separable component of air by Scottish physician Daniel Rutherford in 1772.
Many industrially important compounds, such as ammonia, nitric acid, organic nitrates ( propellants and explosives), and cyanides, contain nitrogen. The extremely strong triple bond in elemental nitrogen (N≡N) dominates nitrogen chemistry, causing difficulty for both organisms and industry in converting the N into useful compounds, but at the same time causing release of large amounts of often useful energy when the compounds burn, explode, or decay back into nitrogen gas. Synthetically produced ammonia and nitrates are key industrial fertilizers, and fertilizer nitrates are key pollutants in the eutrophication of water systems.
Apart from its use in fertilizers and energy-stores, nitrogen is a constituent of organic compounds as diverse as Kevlar fabric and cyanoacrylate "super" glue. Nitrogen is a constituent of every major pharmacological drug class, including antibiotics. Many drugs are mimics or prodrugs of natural nitrogen-containing signal molecules: for example, the organic nitrates nitroglycerin and nitroprusside control blood pressure by metabolizing into nitric oxide. Plant alkaloids (often defense chemicals) contain nitrogen by definition, and many notable nitrogen-containing drugs, such as caffeine and morphine, are either alkaloids or synthetic mimics that act (as many plant alkaloids do) on receptors of animal neurotransmitters (for example, synthetic amphetamines).
Nitrogen occurs in all organisms, primarily in amino acids (and thus proteins), in the nucleic acids ( DNA and RNA) and in the energy transfer molecule adenosine triphosphate. The human body contains about 3% by mass of nitrogen, the fourth most abundant element in the body after oxygen, carbon, and hydrogen. The nitrogen cycle describes movement of the element from the air, into the biosphere and organic compounds, then back into the atmosphere.
Usage examples of "nitrogen".
Animal matter enters into combination with oxygen in precisely the same way as vegetable matter, but as, in addition to carbon and hydrogen, it contains nitrogen, the products of the eremacausis are more numerous, being carbon and nitrate of ammonia, carburetted and sulphuretted hydrogen, and water, and these ammoniacal salts greatly favor the growth of fungi.
Measurements of blood sugar, serum amylase, serum acetone, bilirubin, and blood urea nitrogen were normal.
He knew that liquid nitrogen, a waste product of certain industrial processes, is cheaper than natural gas.
The nitrogen of this and other cruciferous plants serves to make them emit offensive stinks when they lie out of doors and rot.
Modern chemists, however, made it from nitrogen of the very air we breathe, and in Germany it was made during the war from ammonia and calcium cyanamide, both of which may be obtained from the air.
Oatmeal comes the nearest to wheat in the amount of nitrogen or protein, but the digestible part of this is much smaller than in wheat, and the indigestible portion is decidedly irritating to the bowels, so that if used in excess of about one-fifth of our total starch-food required, it is likely to upset the digestion.
One possible explanation: Freshly fallen snows of nitrogen, methane, and other hydrocarbons are irradiated by solar ultraviolet light and by electrons trapped in the magnetic field of Neptune, through which Triton plows.
To guard against loss of nitrogen by leaching, therefore, we should aim to keep rich land occupied by some crop, during the winter and early spring, and the earlier the crop is sown in the autumn or late summer, the better, so that the roots will the more completely fill the ground and take up all the available nitrogen within their reach.
They thought nothing of whipping out a sledgehammer and beating a porthole from the side of a ship, even as their heavy breath hastened nitrogen narcosis, the potentially deadly buildup of that otherwise benign gas in their brains.
There is more cerium on Earth than copper, more neodymium and lanthanum than cobalt or nitrogen.
Nitrogen, Nb for Nobelium, Nd for Neodymium, Ne for Neon, Ni for Nickel, No for Niobrium, Np for Neptunium.
Closer still, the nitrogen had the appearance of a huge flower, petals curling beneath the nimbostratus canopy as gases hit the cold air and sheared down again.
Ordinarily, monoamine oxidase brings about the oxidation of serotonin into a normal metabolite, one in which the nitrogen atoms have been removed.
They are sealed between uses and all the oxygen-nitrogen is pumped out to keep the oxy from leaking out and contaminating the nitrogen atmosphere in the stacks.
A pound of nitrogen in the leached guano is not as available or as valuable as a pound of nitrogen in the unleached guano.