体内時計

Japanese
Kanji in this term
体 内 時 計
たい
Grade: 2		 ない
Grade: 2		 と > ど
Grade: 2		 けい
Grade: 2
on’yomi irregular
Alternative spelling
體內時計 (kyūjitai)

Etymology

From 体内 (“inside the body”) +‎ 時計 (“clock”). The tokei changes to dokei as an instance of rendaku (連濁).

Pronunciation
  • (Tokyo) たいないど​けー [tàínáídóꜜkèè] (Nakadaka – [5])[1]
  • IPA(key): [ta̠ina̠ido̞ke̞ː]

Noun

体(たい)内(ない)時(ど)計(けい) • (tainaidokei) 

  1. biological clock
    Synonym: 生物時計

References
  1. Matsumura, Akira, editor (2006), 大辞林 [Daijirin] (in Japanese), Third edition, Tōkyō: Sanseidō, →ISBN
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