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[ih-fek-ter] /ɪˈfɛk tər/
Also, effecter. a person or thing that effects.
Physiology. an organ or cell that carries out a response to a nerve impulse.
Biochemistry. a substance, as a hormone, that increases or decreases the activity of an enzyme.
Origin of effector
1595-1605; < Latin, equivalent to effec- variant stem of efficere (see effect) + -tor -tor Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for effector
  • In hyperthermia all the effector processes are stained to the utmost, whereas in fevers they are not.
  • But to work, these effector proteins need to first make their way inside of a cell.
  • Consider that an if-then logic statement is nothing but a sensor connected to an effector.
British Dictionary definitions for effector


(physiol) a nerve ending that terminates in a muscle or gland and provides neural stimulation causing contraction or secretion
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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effector in Medicine

effector ef·fec·tor (ĭ-fěk'tər)

  1. A muscle, a gland, or an organ capable of responding to a stimulus, especially a nerve impulse.

  2. A nerve ending that carries impulses to a muscle, a gland, or an organ and activates muscle contraction or glandular secretion.

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