Last Updated
：2025/11/20
caffeine
IPA(Pronunciation)
Noun
uncountable
usually
Japanese Meaning
カフェイン：アルカロイド（化学式C₈H₁₀N₄O₂）で、お茶やコーヒーの植物に自然に含まれ、中枢神経に軽い刺激作用を及ぼす物質。
（ plural ）
Quizzes for review
An alkaloid, C₈H₁₀N₄O₂, found naturally in tea and coffee plants which acts as a mild stimulant on the central nervous system.
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caffeine
I avoid drinking coffee late at night because the caffeine keeps me awake for hours.
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I avoid drinking coffee late at night because the caffeine keeps me awake for hours.
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