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Definitions

hazardous

[haz-er-duhs] / ˈhæz ər dəs /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Army Corps of Engineers cleared nearly 9,700 properties of hazardous items and other fire debris in eight months, one of the fastest cleanups of its size in modern history.

From The Wall Street Journal • Apr. 2, 2026

As of Wednesday morning, Chiang Mai's PM2.5 level, which refers to the concentration of tiny, hazardous particles smaller than 2.5 micrometres, was classified as "very unhealthy".

From BBC • Mar. 31, 2026

“Weather alerts are intended to raise awareness of hazardous conditions, while emergency alerts issued by local authorities are used to communicate immediate protective actions tied to a specific incident,” the statement said.

From Los Angeles Times • Mar. 24, 2026

"Over time, such a small change in an asteroid's motion can make the difference between a hazardous object hitting or missing our planet."

From Science Daily • Mar. 9, 2026

Attaching a name attaches you to the world of fact, which is riskier, more hazardous: who knows what the chances are out there, of survival, yours?

From "The Handmaid's Tale" by Margaret Atwood