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

HSK 5

她对咖啡因过敏。

Tā duì kāfēiyīn guòmǐn.

She is allergic to caffeine.

HSK 5

这种茶的咖啡因含量很低。

Zhè zhǒng chá de kāfēiyīn hánliàng hěn dī.

This type of tea has a very low caffeine content.

HSK 6

咖啡因可以帮助你保持清醒。

Kāfēiyīn kěyǐ bāngzhù nǐ bǎochí qīngxǐng.

Caffeine can help you stay awake.

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