noun
dust and soot; particulate matter
Refers to airborne particles from combustion or industrial processes; often used in environmental and pollution contexts.
工場から出る煤塵が大気汚染の原因になっている。
Soot and dust from factories are causing air pollution.
この地域では煤塵の濃度が基準値を超えた。
In this area, the concentration of particulate matter exceeded the standard.
Compound of 煤 (ばい, 'soot') and 塵 (じん, 'dust'). The reading ばいじん is the standard Sino-Japanese on'yomi.