二十日鼠

Japanese
Kanji in this term
二 十 日 鼠
はた > はつ か
Grade: 1		 ねずみ
Hyōgaiji
Grade: 1 Grade: 1
jukujikun kun’yomi
Alternative spellings
廿日鼠
鼷

Wikispecies

二十日鼠 (hatsuka nezumi): the common house mouse.

Etymology

Compound of 二十日 (hatsuka, “twenty days”) +‎ 鼠 (nezumi, “rat; mouse”),[1][2] so named for the gestation period of roughly 20 days.

Pronunciation
  • (Tokyo) はつかね​ずみ [hàtsúkánéꜜzùmì] (Nakadaka – [4])[2][3][4]
  • IPA(key): [ha̠t͡sɨ̥ᵝka̠ne̞zɨᵝmʲi]

Noun

二十(はつ)日(か)鼠(ねずみ) • (hatsukanezumi) 

  1. Mus musculus, the common house mouse
    Synonyms: 鼷鼠 (keiso), 二十日 (hatsuka)

Usage notes

As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary), as ハツカネズミ.

References
  1. 1988, 国語大辞典（新装版） (Kokugo Dai Jiten, Revised Edition) (in Japanese), Tōkyō: Shogakukan
  2. 2006, 大辞林 (Daijirin), Third Edition (in Japanese), Tōkyō: Sanseidō, →ISBN
  3. 1998, NHK日本語発音アクセント辞典 (NHK Japanese Pronunciation Accent Dictionary) (in Japanese), Tōkyō: NHK, →ISBN
  4. 1997, 新明解国語辞典 (Shin Meikai Kokugo Jiten), Fifth Edition (in Japanese), Tōkyō: Sanseidō, →ISBN
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