HAZARDOUS definition: full of risk; perilous; risky. See examples of hazardous used in a sentence.

Add to word list dangerous and involving risk, especially to someone's health: hazardous industries / materials / substances (Definition of hazardous from the Cambridge Business English Dictionary © …

1. to risk; to be prepared to do (something, the result of which is uncertain).

Something that is hazardous is dangerous, especially to people's health or safety. They have no way to dispose of the hazardous waste they produce.

Definition of hazardous adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

hazardous - WordReference English dictionary, questions, discussion and forums. All Free.

Hazardous refers to anything that presents a potential source of danger, harm, or risk to the health, safety, or environment. This could involve objects, substances, activities, or situations that …