dimethylhydrazine
[ dahy-meth-uh l-hahy-druh-zeen, -zin ]
/ daɪˌmɛθ əlˈhaɪ drəˌzin, -zɪn /
noun Chemistry.
a flammable, highly toxic, and colorless liquid, C2H8N2, used as a component in jet and rocket fuels.