hydrazine
noun
hy·dra·zine ˈhī-drə-ˌzēn 
: a colorless fuming corrosive strongly reducing liquid base N2H4 used especially in fuels for rocket and jet engines
also : an organic base derived from this compound
Examples of hydrazine in a Sentence
Recent Examples on the Web
The crew module has been powered down for recovery, and members of the recovery crew are approaching the capsule and performing a sweep with air quality sensors to make sure no hazardous fumes, such as hydrazine propellant or ammonia coolant, are leaking from the spacecraft. —
Miles Doran, CBS News, 10 Apr. 2026 On Thursday, around 7:50 P.M. EDT, the Orion spacecraft’s main engine, the European Service Module, ignited and jettisoned 6,700 pounds of monomethyl hydrazine propellant over the course of about six minutes. —Joseph Howlett, Scientific American, 2 Apr. 2026 These maneuvers burned 123 kilograms (271 pounds) of onboard hydrazine fuel and changed the spacecraft's velocity by 367 meters per second (1,204 feet per second) — about 821 mph (1,321 kph). —Keith Cooper, Space.com, 25 Mar. 2026 These systems include the emergency exit for the astronauts in case something goes wrong, as well as safely moving fuel, which is made of hydrazine – a molecule made up of nitrogen and hydrogen that is incredibly energy-dense. —Margaret Landis, The Conversation, 3 Feb. 2026 See All Example Sentences for hydrazine
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Miles Doran, CBS News, 10 Apr. 2026 On Thursday, around 7:50 P.M. EDT, the Orion spacecraft’s main engine, the European Service Module, ignited and jettisoned 6,700 pounds of monomethyl hydrazine propellant over the course of about six minutes. —Joseph Howlett, Scientific American, 2 Apr. 2026 These maneuvers burned 123 kilograms (271 pounds) of onboard hydrazine fuel and changed the spacecraft's velocity by 367 meters per second (1,204 feet per second) — about 821 mph (1,321 kph). —Keith Cooper, Space.com, 25 Mar. 2026 These systems include the emergency exit for the astronauts in case something goes wrong, as well as safely moving fuel, which is made of hydrazine – a molecule made up of nitrogen and hydrogen that is incredibly energy-dense. —Margaret Landis, The Conversation, 3 Feb. 2026 See All Example Sentences for hydrazine
Cite this Entry
“Hydrazine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.grautoblog.com/dictionary/hydrazine. Accessed 27 Apr. 2026.
Copy CitationKids Definition
hydrazine
noun
hy·dra·zine ˈhī-drə-ˌzēn
: a colorless fuming liquid used especially in fuels for rocket engines
Medical Definition
hydrazine
noun
hy·dra·zine ˈhī-drə-ˌzēn
: a colorless fuming corrosive strongly reducing liquid base N2H4 used in the production of various materials (as pharmaceuticals and plastics)
also : an organic base derived from this compound
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