analogue

Medical Dictionary

analogue an·a·logue or an·a·log (ān'ə-lôg')
n.

  1. An organ or structure similar in function to one in another species but of dissimilar evolutionary origin.

  2. A structural derivative of a parent chemical compound that often differs from it by a single element.

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