Hydrazine

//ˈhaɪdɹəˌziːn// noun

noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A corrosive, fuming liquid, NH₂-NH₂, used as a rocket fuel. uncountable
  2. 2
    a colorless fuming corrosive liquid; a powerful reducing agent; used chiefly in rocket fuels wordnet
  3. 3
    Any member of the class of organic compounds formally derived from NH₂-NH₂. countable

    "From ethyleneoxides or ethyleneimines carrying an acyl substituent, with hydrazine and its derivatives (Ch. 3. XV)."

Synonyms

All synonyms
diamidogendiamidogen

Example

More examples

"NASA says the Dawn flight team checked through a number of possible causes for the lack of contact but the mission’s managers realized that the spacecraft simply ran out of its hydrazine fuel."

Etymology

Borrowed from German Hydrazin, coined by Emile Fischer in 1875 as a derivative from Diazin, an obsolete name for diimide, of which hydrazine is a hydrogenated analog. By surface analysis, hydr- + azo (“nitrogen”) + -ine.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.