1.
harmful substance; hazardous material; toxic substance
A substance that can cause harm to humans, animals, or the environment. Commonly used in environmental, health, and safety contexts.
有害物質が検出された。
A harmful substance was detected.
工場から有害物質が流出した。
Hazardous materials leaked from the factory.
飲料水に含まれる有害物質の基準値は法律で定められている。
The standard limits for harmful substances in drinking water are set by law.
Composed of 有害 (harmful, hazardous) + 物質 (substance, material). A formal compound frequently seen in news, environmental reports, health regulations, and product safety information.
COMMON COLLOCATIONS:
- 有害物質を含む: to contain harmful substances
- 有害物質の排出: emission of hazardous materials
- 有害物質を除去する: to remove toxic substances
- 有害物質の規制: regulation of harmful substances
SIMILAR WORDS:
- 有毒: toxic, poisonous — more specifically about poison
- 化学物質: chemical substance — neutral term, not inherently harmful
- 汚染物質: pollutant — specifically a substance that contaminates the environment
- 危険物: dangerous goods — broader category including flammable and explosive materials