洁净

• Pinyin: jié jìng
• Hanzi breakdown: 洁 = 氵(water) + 吉 — clean; 净 = 氵(water) + 争 — pure, clean

Meaning

Clean; spotless; pure. Free from dirt, impurities, or contamination.

More formal than 干净, often used in technical, medical, or industrial contexts. Frequently seen in terms like 洁净室 (clean room) and 洁净能源 (clean energy). Can also describe moral or spiritual purity.

Examples

1. 手术室必须保持绝对洁净的环境。 The operating room must maintain an absolutely clean environment.
2. 这家工厂的洁净车间达到了国际标准。 This factory's clean room has met international standards.
3. 雪后的城市显得格外洁净美丽。 The city looks especially clean and beautiful after the snow.

Usage Guide

Context: medical, industrial, environment

Tone: technical

Do Say

• 请保持环境洁净。(Please keep the environment clean.)
• 这是一间洁净实验室。(This is a clean room laboratory.)

Don't Say

• 在日常口语中用'洁净'代替'干净' (Don't use 洁净 instead of 干净 in casual speech — 洁净 sounds too formal; use 干净 for everyday contexts)

Origin & History

Composed of 洁 (clean; pure) + 净 (clean; pure). Both characters convey cleanliness, creating an emphatic compound.

Cultural Context

Generation: All ages

Social background: Professional and technical contexts