JMdict: 1158570

胃酸 【いさん】

  1. [n] stomach acid; gastric acid
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
胃 Stomach, Paunch, Crop, Craw イ 4
酸 Acid, Bitterness, Sour, Tart サン す.い 5