trigger area

Medical Dictionary

trigger area trig·ger area (trĭg'ər)
A point or circumscribed area that when irritated or stimulated will give rise to physiological or pathological change elsewhere.

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