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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.

The suit alleged the turbines emit pollution and hazardous chemicals that have been linked to increases in asthma, respiratory diseases, heart problems and certain cancers.

From The Wall Street Journal • Apr. 14, 2026

Many roads were blocked by trees overnight or restricted due to hazardous conditions, including the A8, A87 and A83.

From BBC • Apr. 5, 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

Manufacturing batteries is “extremely energy intensive,” involves more dangerous chemicals and results in more hazardous waste.

From The Wall Street Journal • Mar. 18, 2026

Hell, if you handled hot agents without a space suit, that would be hazardous work.

From "The Hot Zone" by Richard Preston




Vocabulary lists containing hazardous