• WordNet 3.6
    • n nitrogen 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
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Webster's Revised Unabridged Dictionary
  • Interesting fact: By weight, the sun is 70% hydrogen, 28% helium, 1.5% carbon, nitrogen, and oxygen, and 0.5% all other elements.
    • n Nitrogen (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 ° C at atmospheric pressure. Liquid nitrogen is used as a refrigerant to store delicate materials, such as bacteria, cells, and other biological materials.
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Century Dictionary and Cyclopedia
  • Interesting fact: Lightning puts 10,000,000 tons of nitrogen into the earth each year.
    • n nitrogen Chemical symbol, N; atomic weight, 14. An element existing in nature as a colorless, odorless, tasteless gas, reducible to a liquid under extreme pressure and cold. Its specific gravity is 9674. It is neither combustible nor a supporter of combustion, nor does it enter readily into combination with any other element. At a high temperature it unites directly with magnesium, silicon, chromium, and other metals. It forms about 77 per cent. of the weight of the atmosphere, and is a necessary constituent of all animal and vegetable tissues. In combination with hydrogen it forms the strong base ammonium, and with hydrogen and oxygen a series of acids of which nitric acid is commercially the most important. It may be most readily prepared from atmospheric air. There are five known compounds of nitrogen and oxygen—viz., nitrous oxid or nitrogen monoxid, N2O; nitric oxid, N2O2; nitrogen trioxid, N2O3; nitrogen tetroxid, N2O4; nitrogen pentoxid, N2O5 Formerly called azote.
    • n nitrogen The boiling-point of liquid nitrogen under ordinary atmospheric pressure is -194.4° C. or -317.9° F. For the fixation of atmospheric nitrogen by growing plants, see nitragin.
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Chambers's Twentieth Century Dictionary
  • Interesting fact: The air we breathe is 78% nitrogen, 21.5% oxygen, .5% argon and other gases.
    • n Nitrogen nī′tro-jen a gas forming nearly four-fifths of common air, a necessary constituent of every organised body, so called from its being an essential constituent of nitre
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Webster's Revised Unabridged Dictionary
L. nitrum, natron + -gen,: cf. F. nitrogène,. See Niter
Chambers's Twentieth Century Dictionary
Gr. nitron, and gennaein, to generate.


In literature:

Oh, you think it might be some sample of fertilizer containing concentrated nitrogen?
"The Maids of Paradise" by Robert W. (Robert William) Chambers
These two are the elements which make up water, and oxygen is an important element in air, which has nitrogen in it too.
"The Children's Book of Stars" by G.E. Mitton
Nitrogen won't touch it; we can't pour in enough.
"The Hammer of Thor" by Charles Willard Diffin
An atmosphere of nitrogen.
"Vampires of Space" by Sewell Peaslee Wright
The element most frequently lacking is nitrogen.
"Manual of American Grape-Growing" by U. P. Hedrick
The other products containing nitrogen are present in only small quantities and need not be specially referred to.
"Special Report on Diseases of Cattle" by U.S. Department of Agriculture
This discrepancy led him to believe that the atmospheric nitrogen must contain some impurity.
"A History of Science, Volume 5(of 5)" by Henry Smith Williams
NITROGEN is contained in most animal matter, but is most abundant in fibrin.
"A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition)" by Calvin Cutter
Most of the air, however, is nitrogen, about 78 percent in fact and almost all the rest is oxygen.
"Letters of a Radio-Engineer to His Son" by John Mills
What is the use of nitrogen in air?
"The Elements of Agriculture" by George E. Waring

In poetry:

shall, anyhow, stop eating, surrender my smidge
of nitrogen to the World Fund
with a drawn-out Oh (unless at the nod
of some jittery commander
"Thanksgiving for a Habitat" by W H Auden

In news:

An 18-year-old British woman reportedly needed emergency surgery to have her stomach removed after celebrating her birthday with a cocktail made with liquid nitrogen .
Providing nitrogen to an NMR facility using an in-house nitrogen generator.
Benefits of in-house nitrogen generation.
Generating Nitrogen for Nuclear Magnetic Resonance Spectroscopy.
The US Environmental Protection Agency has announced a new national air quality standard for nitrogen dioxide (NO2).
Growers who want to use the pre-sidedress nitrogen test (PSNT) should remember that the usefulness of the information it provides can be heavily influenced by how the samples are collected, handled, and processed.
Is the nitrogen cycle out of whack.
These regulations dramatically decrease discharges of particulate matter (soot and ash) and nitrogen oxide (NOx), virtually eliminating these emissions from on-road diesel engines.
Based in Deerfield, IL, it operates nitrogen fertilizer plants in Donaldsonville, LA, and Medicine Hat, AB, Canada.
Wind + water + air = nitrogen (N) fertilizer.
The International Plant Nutrition Institute presented an analysis of partial nitrogen balances and flux of nitrogen to the Gulf of Mexico at a recent sustainability meeting.
Nitrogen-Water Advantages on Nonferrous Material.
The order is comprised of two 36-72-36 UBQ (Universal Batch Quench) furnaces with atmosphere top cool chambers, two UBT temper furnaces , one UBTN nitrogen temper furnace and companion equipment.
A partial incorporation of nitrogen saw no difference in loss in a four-year study.
INDIANAPOLIS — Dow AgroSciences announces INSTINCT ® nitrogen stabilizer has received Section 3 Federal Supplemental Label from the US Environmental Protection Agency.

In science:

Only the 4 nitrogens surrounding Mn are considered: Ntop is that on-top of Mn, Nbase s one of the three N at the vertices of the triangular base.
Self-interaction effects in (Ga,Mn)As and (Ga,Mn)N
This type of cooling allows the telescope to run unattended since there is no need to continually refill a nitrogen dewar5 .
Rates and Progenitors of Type Ia Supernovae
This is consistent with low nitrogen abundances in the LMC.
Spitzer observations of acetylene bands in carbon-rich AGB stars in the Large Magellanic Cloud
We assume that the oxygen and nitrogen abundances are [O/H] = 8.3, and [N/H] = 7.5.
Spitzer observations of acetylene bands in carbon-rich AGB stars in the Large Magellanic Cloud
The assumed oxygen and nitrogen abundances are comparable to those found in red giants in the LMC (Smith et al. 2002).
Spitzer observations of acetylene bands in carbon-rich AGB stars in the Large Magellanic Cloud