hydrazine: Meaning and Definition of

hy•dra•zine

1. Also calleda colorless, oily, fuming liquid, NH, 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.