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noun Chemistry.
a colorless, odorless, gaseous element that constitutes about four-fifths of the volume of the atmosphere and is present in combined form in animal and vegetable tissues, especially in proteins: used chiefly in the manufacture of ammonia, nitric acid, cyanide, explosives, fertilizer, dyes, as a cooling agent, etc. Symbol: N; atomic weight: 14.0067; atomic number: 7; density: 1.2506 g/l at 0°C and 760 mm pressure.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Nitrogen
is always a great word to know.
So is inorganic compounds. Does it mean:
| rod like spatial configuration of many protein molecules |
| any compound that is lacking carbon atoms or ionically bound to other atoms when atoms are present |
Example Sentences
- Excess nitrogen feeds an explosion of algae, which eventually dies and sinks.
- It's a small nitrogen jet tank with a minute of fuel.
- Nitrogen dioxide, also produced by combustion, can cause breathing problems in high doses.
Collins
World English Dictionary
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History
nitrogen
1794, from Fr. nitrogène, coined 1790 by Fr. chemist Jean Antoine Chaptal (1756-1832), from comb. form of Gk. nitron "sodium carbonate" (from Egyptian ntr) + Fr. gène "producing." The gas was discovered in analysis of nitric acid. Earlier name (1772) was mephitic air. The word nitre was
EXPANDin use in late M.E. for "potassium nitrate, saltpetre" (c.1400).
COLLAPSE
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
nitrogen ni·tro·gen (nī'trə-jən)
n.
Symbol N
A nonmetallic element that constitutes nearly four fifths of the air by volume, occurring as a colorless, odorless, almost inert diatomic gas, N2, in various minerals and in all proteins. Atomic number 7; atomic weight 14.0067; melting point -210.00°C; boiling point -195.8°C; valence 3, 5.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
nitrogen  (nī'trə-jən) Pronunciation Key
Symbol N A nonmetallic element that makes up about 78 percent of the atmosphere by volume, occurring as a colorless, odorless gas. It is a component of all proteins, making it essential for life, and it is also found in various minerals. Nitrogen is used to make ammonia, nitric acid, TNT, and fertilizers. Atomic number 7; atomic weight 14.0067; melting point -209.86°C; boiling point -195.8°C; valence 3, 5. See Periodic Table. See Note at oxygen. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary
nitrogen definition
A chemical element that makes up about four-fifths of the atmosphere of the Earth. Its symbol is N.
Note: Like carbon, nitrogen is a necessary element in the tissues of living things.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Word Dynamo Rating For Nitrogen
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