JMdict: 1759530

体内時計 【たいないどけい】

  1. [n] biological clock
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Body, Substance, Object, Reality, Counter For Images タイ, テイ からだ, かたち
Inside, Within, Between, Among, House, Home ナイ, ダイ うち
Time, Hour とき, -どき
Plot, Plan, Scheme, Measure ケイ はか.る, はか.らう