ˌ ̷ ̷ ̷ ̷ˈ ̷ ̷ ̷ ̷ˌhīd noun
( -s )
Etymology: International Scientific Vocabulary acet- + aldehyde
: a colorless volatile water-soluble liquid aldehyde CH 3 CHO of pungent odor made usually by oxidation of ethyl alcohol or by catalytic hydration of acetylene and used chiefly in organic synthesis