咖啡因

kāfēiyīn

noun #8,614

Meanings

1 caffeine

Characters

used in 咖啡 (coffee)

used in 咖啡 (coffee)

cause; factor; -ine (chemistry suffix)

Coffee + -ine — the stimulant compound found in coffee. 因 is used as a phonetic suffix for the '-ine' ending in chemical terms.

Examples

咖啡因可以帮助你保持清醒。

Kāfēiyīn kěyǐ bāngzhù nǐ bǎochí qīngxǐng.

Caffeine can help you stay awake.

她对咖啡因过敏。

Tā duì kāfēiyīn guòmǐn.

She is allergic to caffeine.

这种茶的咖啡因含量很低。

Zhèzhǒng chá de kāfēiyīn hánliàng hěn dī.

This type of tea has a very low caffeine content.

Tips

usage

因 as a chemistry suffix corresponds to English '-ine': 咖啡因 (caffeine), 尼古丁 (nicotine, uses 丁 instead), 吗啡 (morphine). Tea also contains caffeine — 茶叶里也有咖啡因.

Stroke Order

咖 kā

啡 fēi

因 yīn