A specialized organ or structure, such as the eye, ear, tongue, nose, or skin, where sensory neurons are concentrated and that functions as a receptor. Also called sensor.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.