苯环 (běn huán) — benzene ring (chemistry) | tongtong Chinese Dictionary

Definition

noun

benzene ring (chemistry)

Measure word · 个

Examples

苯环。
běn huán Shì fāng xiāng zú huà hé wù de jī běn jié gòu.
The benzene ring is the basic structure of aromatic compounds.
苯环。
Zhè ge fēn zǐ zhōng yǒu liǎng gè běn huán.
This molecule contains two benzene rings.
苯环。
běn huán Shàng de qīng yuán zǐ kě yǐ bèi qí tā jī tuán qǔ dài.
The hydrogen atoms on the benzene ring can be replaced by other groups.

Origin

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.

苯běnbenzene

苯 names the benzene substance, and 环 gives the ring shape.

Characters in this word

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

艹本苯

Meaning part形符xíngfú

艹Written in full as艸cǎo

Sound part声符shēngfú

本

Same sound today

The top part 艹 relates to plants, and the bottom part 本 shows the pronunciation.

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

This origin belongs to the traditional form 環; 环 is its simplified writing.

Meaning part形符xíngfú

玉玉yùjade

Sound part声符shēngfú

睘

睘qióng環huán

The sound has drifted apartThe sound part was a clue two thousand years ago — it often still helps, but not always.

The traditional form 環 pairs 玉 (jade) with a sound part; the simplified 环 is a shorthand and its right side is not the historical sound part.

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