Dictionary

poisonous

adjective poi·son·ous \ˈpiz-nəs, ˈpi-zən-əs\

: 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

Full Definition of POISONOUS

2
:  having the properties or effects of poison :  venomous
3
poi·son·ous·ly adverb

Examples of POISONOUS

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

First Known Use of POISONOUS

1565

poisonous

adjective poi·son·ous \ˈpiz-nəs, -ən-əs\   (Medical Dictionary)

Medical Definition of POISONOUS

:  having the properties or effects of poison :  venomous

Browse

Next Word in the Dictionary: poison outPrevious Word in the Dictionary: poison oakAll Words Near: poisonous
March 30, 2015
amphibology Hear it
A phrase with more than one interpretation
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears