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irritation - 5 dictionary results
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ir⋅ri⋅ta⋅tion

  [ir-i-tey-shuhn]
Use irritation in a Sentence
–noun
1. the act of irritating or the state of being irritated.
2. something that irritates.
3. Physiology, Pathology.
a. the bringing of a bodily part or organ to an abnormally excited or sensitive condition.
b. the condition itself.
Origin:
1580–90; < L irrītātiōn- (s. of irrītātiō). See irritate, -ion
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ir·ri·ta·tion   (ĭr'ĭ-tā'shən)   
n.  
    1. The act of irritating.
    2. The condition of being irritated; vexation: honked the horn with irritation at the delay.
  2. A source of irritation.
  3. Pathology A condition of inflammation, soreness, or irritability of a bodily organ or part.
  4. Physiology The elicitation of activity or response in an animal or plant organ or tissue.
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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Irritation

Ir`ri*ta"tion\, n. [L. irritatio: cf. F. irritation.]

1. The act of irritating, or exciting, or the state of being irritated; excitement; stimulation, usually of an undue and uncomfortable kind; especially, excitement of anger or passion; provocation; annoyance; anger.

The whole body of the arts and sciences composes one vast machinery for the irritation and development of the human intellect. --De Quincey.

2. (Physiol.) The act of exciting, or the condition of being excited to action, by stimulation; -- as, the condition of an organ of sense, when its nerve is affected by some external body; esp., the act of exciting muscle fibers to contraction, by artificial stimulation; as, the irritation of a motor nerve by electricity; also, the condition of a muscle and nerve, under such stimulation.

3. (Med.) A condition of morbid excitability or oversensitiveness of an organ or part of the body; a state in which the application of ordinary stimuli produces pain or excessive or vitiated action.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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Language Translation for : irritation
Spanish: molestia,
German: das Ärgernis,
Japanese: うるさがらせるもの
More Translations »

Main Entry: ir·ri·ta·tion
Pronunciation: "ir-&-'tA-sh&n
Function: noun
1 a : the act of irritating b : something that irritates c : the state of being irritated
2 : a condition of irritability, soreness, roughness, or inflammation of a bodily part
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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irritation ir·ri·ta·tion (ĭr'ĭ-tā'shən)
n.

  1. Extreme incipient inflammatory reaction of the body tissues to an injury.
  2. The normal response of a nerve or muscle to a stimulus.
  3. The evocation of a reaction in the body tissues by the application of a stimulus.

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