JMdict: 1947700

夜行性 【やこうせい】

  1. [n,adj-no] nocturnality; nocturnal habits
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Night, Evening よ, よる
Going, Journey, Carry Out, Conduct, Act, Line, Row, Bank コウ, ギョウ, アン い.く, ゆ.く, -ゆ.き, -ゆき, -い.き, -いき, おこな.う, おこ.なう
Sex, Gender, Nature セイ, ショウ さが