甲基 (jiǎ jī) — methyl | TongTong Chinese Dictionary

Definition

A methyl group in chemistry: one carbon atom bonded to three hydrogens (–CH₃), used as a substituent in organic compounds.

noun

methyl

Measure word · 个

甲基。
Zhè ge huà hé wù hán yǒu yí gè jiǎ jī.
This compound contains one methyl group.
甲基。
Zài shí yàn zhōng wǒ men yòng jiǎ jī qǔ dài le qīng.
In the experiment, we used methyl to replace hydrogen.
甲基，。
jiǎ jī De jié gòu hěn jiǎn dān, zhī hán yǒu yí gè tàn yuán zǐ.
The structure of methyl is very simple; it only contains one carbon atom.

Compound word

构词法gòucífǎ

偏正piānzhèngModifier + head

The first part narrows down the second: it says what kind of thing the head is.

甲jiǎfirst-carbon

基jīradical

The 甲 first-carbon sense combines with 基 radical to name methyl.

Characters in this word

A drawing of the thing itself, worn down over three thousand years into a few strokes.

甲 is drawn as a hard protective shell, carapace, or scales of an animal, or as armor made of connected plates.

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

其土基

Meaning part形符xíngfú

土土tǔearth

Sound part声符shēngfú

其

Same sound today

The lower 土 means earth, and the upper 其 gives the sound; together they form the idea of a foundation of earth.

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