Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A sense organ, such as the ear, that receives and responds to stimuli originating from outside the body.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun anatomy A sense organ or nerve receptor that responds to external stimuli

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun any receptor that responds to stimuli outside the body

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Latin exter, outside; see exterior + (re)ceptor.]

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Examples

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