Formaldehyde

[fɔː'mældɪhaɪd] or [fɔr'mældɪhaɪd]

(noun.) a colorless poisonous gas; made by the oxidation of methanol.

Inputed by Boris--From WordNet

(n.) A colorless, volatile liquid, H2CO, resembling acetic or ethyl aldehyde, and chemically intermediate between methyl alcohol and formic acid.

Inputed by Hahn

Typist: Tito