nitrogen
Use Nitrogen in a sentence
trə 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. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To nitrogen
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Nitrogen
is always a great word to know.
So is hemoglobin. Does it mean:
| the oxygen-carrying pigment of red blood cells that gives them their red color and serves to convey oxygen to the tissues: occurs in reduced form |
| the most important of the male sex hormones, both males and females have it, but the additional testosterone in males stimulates the growth of the male sex organs in the fetus and the development of the male sex characteristics during puberty |
Collins
World English Dictionary
nitrogen (ˈnaɪtrədʒən) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| a. a colourless odourless relatively unreactive gaseous element that forms 78 per cent (by volume) of the air, occurs in many compounds, and is an essential constituent of proteins and nucleic acids: used in the manufacture of ammonia and other chemicals and as a refrigerant. Symbol: N; atomic no: 7; atomic wt: 14.00674; valency: 3 or 5; density: 1/2506 kg/m³; melting pt: --210.00°C; boiling pt: --195.8°C | |
| b. (as modifier): nitrogen cycle | |
Collins English Dictionary - Complete & Unabridged 10th Edition
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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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
in use in late M.E. for "potassium nitrate, saltpetre" (c.1400).
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.
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Example sentences
One trick of the trade, he says, is filling your tires with nitrogen instead of air.
Too much nitrogen makes plants grow leaves at the expense of fruit.
Manure from rabbits, sheep, goats and chickens contains abundant nitrogen.
Plants visited by bats had much more nitrogen in their leaves than control plants.
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