ir·ri·ta·bil·i·ty

[ir-i-tuh-bil-i-tee]
noun, plural ir·ri·ta·bil·i·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.

Origin:
1745–55; < Latin irrītābilitās. See irritable, -ity

non·ir·ri·ta·bil·i·ty, noun
su·per·ir·ri·ta·bil·i·ty, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To irritability
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World English Dictionary
irritable (ˈɪrɪtəbəl) [Click for IPA pronunciation guide]
 
adj
1.  quickly irritated; easily annoyed; peevish
2.  (of all living organisms) capable of responding to such stimuli as heat, light, and touch
3.  pathol abnormally sensitive
 
irrita'bility
 
n
 
'irritableness
 
n
 
'irritably
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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00:10
Irritability has a plethora of syllables.
So is sesquipedalianism. Does it mean:
given to using long words.
(used as a nonsense word by children to express approval or to represent the longest word in English.)
American Heritage
Medical Dictionary

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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Example sentences
It leads to irritability, irrationality, and irascibility.
With a bitter brand of humor and irritability, he creates a formidable guy.
The activity index was expected to reflect positive characteristics, but it
  appears to have implied overactivity and irritability.
Symptoms include overeating, lethargy, irritability and aching joints.
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