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[hahy-druh-zeen] /ˈhaɪ drəˌzin/
Also called diamine. a colorless, oily, fuming liquid, N 2 H 4 , that is a weak base in solution and forms a large number of salts resembling ammonium salts: used chiefly as a reducing agent and a jet-propulsion fuel.
a class of substances derived by replacing one or more hydrogen atoms in hydrazine by an organic group.
Origin of hydrazine
1885-90; hydr-2 + az- + -ine2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for hydrazine
Historical Examples
  • Amidoguanidine is a body of hydrazine type, for it reduces gold and silver salts and yields a benzylidine derivative.

  • On digestion of its warm aqueous solution with warm dilute sulphuric acid, hydrazine sulphate and oxalic acid are obtained.

  • They want us to send them the quality control specification for the hydrazine that was used as fuel in the first launch.

  • While they're unloading the G-boat, I wish you'd get the tanks refilled with hydrazine and nitric acid.

    Atom Drive Charles Louis Fontenay
  • "If we had a franchise, we could force Space Fuels to sell us hydrazine," said Deveet unhappily.

    Atom Drive Charles Louis Fontenay
British Dictionary definitions for hydrazine


/ˈhaɪdrəˌziːn; -zɪn/
a colourless basic liquid made from sodium hypochlorite and ammonia: a strong reducing agent, used chiefly as a rocket fuel. Formula: N2H4
Word Origin
C19: from hydro- + azo- + -ine²
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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hydrazine in Science
  (hī'drə-zēn', -zĭn)   
A colorless, fuming, corrosive liquid with an odor like ammonia that is a powerful reducing agent. It can be combined with organic compounds to form jet and rocket fuels and is also used to make explosives, fungicides, medicines, and photographic chemicals. Chemical formula: N2H4.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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