羧酸 [－－]

Jyutping so1 syun1
Pinyin zuī suān

Definitions (Wiktionary)
  1. noun
    carboxylic acid

羧酸 [－－]

Jyutping so1 syun1
Pinyin suō suān

Definitions (CC-CEDICT)
  1. carboxylic acid