antitrope

antitrope

 [an´tĭ-trōp]
one of two structures that are similar but oppositely oriented, like the right and the left hand.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

an·ti·trope

(an'ti-trōp),
An organ or appendage that forms a symmetrically reversed pair with another of the same type, for example, the right and left legs of a vertebrate.
[anti- + G. tropē, a turn]
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