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infectious

 - 4 dictionary results
Infection
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in⋅fec⋅tious

  [in-fek-shuhs]
Use infectious in a Sentence
–adjective
1. communicable by infection, as from one person to another or from one part of the body to another: infectious diseases.
2. causing or communicating infection.
3. tending to spread from one to another: infectious laughter.
4. Law. capable of contaminating with illegality; exposing to seizure or forfeiture.
5. Obsolete. diseased.
Origin:
1535–45; infect(ion) + -ious

Related forms:
in⋅fec⋅tious⋅ly, adverb
in⋅fec⋅tious⋅ness, noun

Synonyms:
1. catching. See contagious.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Infection
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in·fec·tious   (ĭn-fěk'shəs)   
adj.  

  1. Capable of causing infection.

  2. Caused by or capable of being transmitted by infection.

  3. Caused by a pathogenic microorganism or agent.

  4. Easily or readily communicated: an infectious laugh.

in·fec'tious·ly adv., in·fec'tious·ness n.
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: in·fec·tious
Pronunciation: in-'fek-sh&s
Function: adjective
1 : capable of causing infection infectious without exhibiting signs of disease> infectious agents>
2 : communicable by invasion of the body of a susceptible organisminfectious, but it does not follow that all infectious diseases are contagious —W. A. Hagan> —compare CONTAGIOUS 1 —in·fec·tious·ly adverb —in·fec·tious·ness noun
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

infectious in·fec·tious (ĭn-fěk'shəs)
adj.

  1. Capable of causing infection.

  2. Caused by or capable of being transmitted by infection.

  3. Caused by a pathogenic microorganism or agent.

in·fec'tious·ness n.

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