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poisonous
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poi·son·ous

adjective \ˈpȯiz-nəs, ˈpȯi-zən-əs\

Definition of POISONOUS

1
: destructive, harmful
2
: having the properties or effects of poison : venomous
3
: spiteful, malicious
— poi·son·ous·ly adverb
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Examples of POISONOUS

  1. Chocolate is poisonous to dogs.
  2. This species of spider is extremely poisonous.

First Known Use of POISONOUS

1565

Related to POISONOUS

Synonyms
envenomed, poison, poisoned, toxic, venomous
Antonyms
nonpoisonous, nontoxic, nonvenomous

poi·son·ous

adjective \ˈpȯiz-nəs, -ən-əs\   (Medical Dictionary)

Medical Definition of POISONOUS

: having the properties or effects of poison : venomous

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