色氨酸 [－－－]

Jyutping sik1 on1 syun1
Pinyin sè ān suān

Definitions (CC-CEDICT)
  1. tryptophan (Trp), an essential amino acid
Definitions (Wiktionary)
  1. noun, Mainland-China
    tryptophan
    (syn.) 色胺酸