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poisonous

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adjective poi·son·ous \ˈpȯiz-nəs, ˈpȯi-zən-əs\

Simple Definition of poisonous

  • : causing sickness or death by entering or touching the body : containing poison

  • : capable of putting poison into another animal's body by biting it

  • : very harmful or unpleasant

Source: Merriam-Webster's Learner's Dictionary

Full Definition of poisonous

  1. 1 :  destructive, harmful

  2. 2 :  having the properties or effects of poison :  venomous

  3. 3 :  spiteful, malicious

poisonously

adverb

Examples of poisonous in a sentence

  1. Chocolate is poisonous to dogs.

  2. This species of spider is extremely poisonous.



1565

First Known Use of poisonous

1565


POISONOUS Defined for Kids

poisonous

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adjective poi·son·ous \ˈpȯi-zən-əs\

Definition of poisonous for Students

  1. :  containing poison :  having or causing an effect of poison <poisonous mushrooms>




Medical Dictionary

poisonous

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adjective poi·son·ous \ˈpȯiz-nəs, -ən-əs\

Medical Definition of poisonous

  1. 1:  having the properties or effects of poison <poisonous gas>

  2. 2:  producing a toxic substance that causes injury or death when absorbed or ingested <poisonous frogs and plants>; also :  venomous





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