poisonous

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

Definition of poisonous

  1. 1 :  destructive, harmful

  2. 2a :  having the properties or effects of poison poisonous gasb :  producing a toxic substance that causes injury or death when absorbed or ingested poisonous mushrooms; also :  venomous a poisonous spider

  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.

15th Century

First Known Use of poisonous

15th century


POISONOUS Defined for English Language Learners

poisonous

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

Definition of poisonous for English Language Learners

  • : 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


POISONOUS Defined for Kids

poisonous

play
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

play
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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