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Definitions

poisonous

[poi-zuh-nuhs] / ˈpɔɪ zə nəs /


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.

It’s got poisonous lead in it from paint.

From Salon • Mar. 6, 2026

In the past three months, California has seen a sudden uptick in the number of people becoming sickened and dying after accidentally eating poisonous mushrooms found in the wild.

From Los Angeles Times • Feb. 8, 2026

Whether you have sympathy for him, think his behaviour is appalling, or something in between, there's clearly a poisonous row raging over what he did.

From BBC • Jan. 17, 2026

Hydrogen cyanide, which is highly poisonous, can freeze into crystals at low temperatures.

From Science Daily • Jan. 16, 2026

Perhaps London would be overwhelmed by poisonous gas, or overrun by German parachutists aided on the ground by fifth columnists before Lola’s wedding could take place.

From "Atonement" by Ian McEwan