- Main Entry:
- hy·dra·zine

- Pronunciation:
-
\ˈhī-drə-ˌzēn\
- Function:
- noun
- Etymology:
- International Scientific Vocabulary
- Date:
- 1887
: 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