アセトアルデヒドあせとあるでひどFreq.FrequencyTop 100,000Meanings1nounacetaldehydeA chemical compound (CH₃CHO) used in organic synthesis and found as a metabolite of ethanol. Technical term.アセトアルデヒドは酢さく酸さんの合ごう成せいに使つかわれる。Acetaldehyde is used in the synthesis of acetic acid.