aldehyden. 醛、乙醛學術名詞醛:化學術語、高分子材料、畜牧學、紡織科技、電機工程、化學乙醛:電機工程、電力工程、海事醛類:土木工程、植物學英文釋義any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids