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).

The noun "hazard" means something dangerous, and the adjective hazardous refers to anything that involves danger. A golf course with lots of sand traps is especially hazardous for golfers.

Definition of hazardous adjective from the Oxford Advanced Learner's Dictionary. involving risk or danger, especially to somebody’s health or safety. They endured a hazardous journey through …

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.

Aug 7, 2023 · “Hazardous” refers to something that poses a threat or danger to human health, the environment, or property. It can describe substances, activities, situations, or conditions that can …

Hazardous definition: Marked by danger; perilous.

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

May 8, 2026 · The term “hazardous” is often used to describe substances or situations that pose a threat to health, safety, or the environment. However, understanding what constitutes hazardous requires a …