排気ガス

• Reading: はいきガス
• Romaji: haiki gasu
• Kanji breakdown: 排 (hai) — expel,排出; 気 (ki) — air, gas; ガス (gasu) — gas (loanword)
• Pronunciation: /hai.ki.ɡa.sɯ/

Meaning

Exhaust fumes; exhaust gas. The waste gases emitted by engines and industrial processes.

A noun combining 排気 (haiki, exhaust/ventilation) and ガス (gasu, gas). Primarily refers to vehicle exhaust and industrial emissions. A key term in environmental discussions about air pollution. Related terms include 排出ガス (haishutsu gasu, emission gas) and 排ガス (haigasu, abbreviated form). Central to conversations about environmental regulations and health concerns.

Examples

1. 排気ガスの削減は地球温暖化対策の一つだ。 Reducing exhaust emissions is one measure against global warming.
2. 都市部では排気ガスによる大気汚染が深刻だ。 Air pollution from exhaust fumes is a serious problem in urban areas.
3. 電気自動車は排気ガスを出さない。 Electric vehicles don't produce exhaust fumes.

Usage Guide

Context: environment, transportation, health

Tone: neutral

Origin & History

Compound of 排気 (haiki, exhaust) + ガス (gasu, gas — from English 'gas'). 排 (hai, expel) + 気 (ki, air/gas) — literally 'expelled air/gas.'

Cultural Context

Era: Modern

Generation: All ages

Social background: Universal