irritability definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
noun pl. ir·ri·ta·bil·i·ties
- The quality or state of being irritable; testiness or petulance.
- Pathology Abnormal or excessive sensitivity of a body organ or part to a stimulus.
- Physiology The capacity to respond to stimuli.
irritability - Medical Definition
- The capacity to respond to stimuli.
- Abnormal or excessive sensitivity to stimuli of an organism, organ, or body part.
Variant of irritable
- easily annoyed or provoked; fretful
- Med. excessively or pathologically sensitive to a stimulus
- Physiol. able to respond to a stimulus
Origin: Classical Latin irritabilis ; from irritare, to irritate