唾液(だえき)

だえき
noun
saliva
formalmedicalbody-internal
See also: つば (everyday term)
1. saliva
The liquid produced by glands in the mouth that aids in digestion and keeps the mouth moist. The formal or scientific term for spit.
唾液(だえき)には消化(しょうか)酵素(こうそ)が含(ふく)まれている。
Saliva contains digestive enzymes.
緊張(きんちょう)すると唾液(だえき)が出(で)にくくなる。
When you get nervous, saliva becomes harder to produce.
唾液(だえき)検査(けんさ)で感染症(かんせんしょう)の有無(うむ)を調(しら)べることができる。
A saliva test can check for the presence of an infection.

Usage

唾液(だえき) is the formal, medical, and scientific term for saliva. In everyday speech, つば or 唾(つば) is more common. 唾液(だえき) is used in health, medical, and educational contexts.

Common collocations

Similar words

つば (唾(つば)) is the everyday word for spit or saliva. よだれ means drool, especially involuntary drooling.

Related Words

Related: よだれ (drool)
Related: 生唾(なまつば) (saliva from anticipation)
Compare: 粘液(ねんえき) (mucus)
Compare: 消化液(しょうかえき) (digestive fluid)
general
Added 2026.3.9 9:42 · Revised 2026.9.2 13:01
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