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hydrazine

American  
[hahy-druh-zeen] / ˈhaɪ drəˌzin /

noun

  1. 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.

  2. a class of substances derived by replacing one or more hydrogen atoms in hydrazine by an organic group.


hydrazine British  
/ ˈhaɪdrəˌziːn, -zɪn /

noun

  1. a colourless basic liquid made from sodium hypochlorite and ammonia: a strong reducing agent, used chiefly as a rocket fuel. Formula: N 2 H 4

"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

hydrazine Scientific  
/ hī′drə-zēn′,-zĭn /
  1. 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: N 2 H 4 .


Etymology

Origin of hydrazine

First recorded in 1885–90; hydr- 2 + az- + -ine 2


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Experts at the time said they believed it was most likely a fuel tank or bladder tank containing hydrazine - a highly volatile propellant - from an unmanned rocket.

From BBC ● Jul. 5, 2026

At trial, jurors were told that tests found Real Water contained hydrazine, a chemical used in rocket fuel that may have been introduced during treatment before bottling.

From Seattle Times ● Feb. 8, 2024

The US justified the demonstration, arguing that the satellite had toxic hydrazine fuel on board that could have become hazardous if parts of the satellite landed.

From The Verge ● Apr. 15, 2020

Inorganic derivations include chloramine, NH2Cl, and hydrazine, N2H4:

From Textbooks ● Feb. 14, 2019

But I've been doing the hydrazine reaction with the assumption that I was using all of it.

From "The Martian" by Andy Weir

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