KETENE
- a toxic gas, also ETHONONE [n -S]
- colorless, poisonous gas, C2H2O, irritating to the lungs, prepared from acetone or acetic acid by pyrolysis: used chiefly in the manufacture of certain commercial chemicals, as acetic anhydride and aspirin
- a colorless poisonous gas C2H2O of penetrating odor used especially as an acetylating agent