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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.

Abruptly capping wells is geologically hazardous: sudden pressure drops clog wellbores with heavy waxes.

From The Wall Street Journal • Apr. 8, 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

The TSA screens passengers and luggage for hazardous items.

From BBC • Mar. 22, 2026

After Mrs. Tesla evacuated the lab and called the hazardous waste removal squad, she praised Tyson and me for being natural chemists.

From "The Sea of Monsters" by Rick Riordan




Vocabulary lists containing hazardous