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poisonous

 - 4 dictionary results

poi⋅son⋅ous

  [poi-zuh-nuhs]
Use poisonous in a Sentence
–adjective
1. full of or containing poison: poisonous air; a poisonous substance.
2. harmful; destructive: poisonous to animals; poisonous rumors.
3. deeply malicious; malevolent: poisonous efforts.
Origin:
1565–75; poison + -ous

Related forms:
poi⋅son⋅ous⋅ly, adverb
poi⋅son⋅ous⋅ness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To poisonous
poi·son·ous   (poi'zə-nəs)   
adj.  

  1. Capable of harming or killing by or as if by poison; toxic or venomous.

  2. Containing a poison.

  3. Marked by apparent ill will: "poisonous hate . . . in his eyes" (Ernest Hemingway).

poi'son·ous·ly adv., poi'son·ous·ness n.
Synonyms: These adjectives mean having the destructive or fatal effect of a poison: a poisonous snake; a mephitic vapor; a pestilent agitator; pestilential jungle mists; toxic fumes; venomous jealousy; a virulent form of cancer.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: poi·son·ous
Pronunciation: 'poiz-n&s, -&n-&s
Function: adjective
: having the properties or effects ofpoison : VENOMOUS
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

poisonous poi·son·ous (poi'zə-nəs)
adj.
Relating to or caused by a poison.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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