不ふ可か欠けつアミノ酸さんふかけつアミノさんMeanings1nounessential amino acidBiochemistry term; an amino acid that cannot be synthesized by the body and must be obtained from food. Synonymous with 必須アミノ酸.See also: 必須アミノ酸人にん間げんにとって不ふ可か欠けつアミノ酸さんは9種しゅ類るい