noun🔗ShareアルデヒドAny of a large class of reactive organic compounds (R·CHO) having a carbonyl functional group attached to one hydrocarbon radical and a hydrogen atom.""Some fruits, like ripe apples, contain aldehydes, which contribute to their characteristic sweet smells." "完熟したリンゴなどの一部の果物には、特徴的な甘い香りに貢献するアルデヒドが含まれています。compoundsubstancechemistrybiochemistryChat with AIVocabulary GamePractice Reading