JMdict: 2126900

腸内 【ちょうない】

  1. [n,adj-no] intestinal; inside the intestines
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
腸 Intestines, Guts, Bowels, Viscera チョウ はらわた, わた
内 Inside, Within, Between, Among, House, Home ナイ, ダイ うち

Words often seen with this one: (experimental feature)

悪玉菌 (16), 菌 (15)