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irritability

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ir⋅ri⋅ta⋅bil⋅i⋅ty

  [ir-i-tuh-bil-i-tee]
–noun, plural -ties.
1. the quality or state of being irritable.
2. Physiology, Biology. the ability to be excited to a characteristic action or function by the application of some stimulus: Protoplasm displays irritability by responding to heat.
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Origin:
1745–55; < L irrītābilitās. See irritable, -ity
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2010.
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ir·ri·ta·bil·i·ty   (ĭr'ĭ-tə-bĭl'ĭ-tē)   
n.   pl. ir·ri·ta·bil·i·ties

  1. The quality or state of being irritable; testiness or petulance.

  2. Pathology Abnormal or excessive sensitivity of a body organ or part to a stimulus.

  3. Physiology The capacity to respond to stimuli.

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: ir·ri·ta·bil·i·ty
Pronunciation: "ir-&t-&-'bil-&t-E
Function: noun
Inflected Form: plural -ties
1 : the property of protoplasm and of living organisms that permits them to react to stimuli
2 a : quick excitability to annoyance, impatience, oranger b : abnormal or excessive excitability of an organ or part of the body (as the stomach or bladder)
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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irritability ir·ri·ta·bil·i·ty (ĭr'ĭ-tə-bĭl'ĭ-tē)
n.

  1. The capacity to respond to stimuli.

  2. Abnormal or excessive sensitivity to stimuli of an organism, organ, or body part.

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