irritate(redirected from irritator)
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v. irri·tated, irri·tating, irri·tates
1. To cause (someone) to feel impatient or angry; annoy: a loud, bossy voice that irritates listeners.
2. To make sore or inflamed: The smoke irritated my eyes.
3. Physiology To cause a physiological response to a stimulus in (a cell, body tissue, or organism).
To be a cause of impatience or anger.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.