antitrope

antitrope

 [an´tĭ-trōp]
one of two structures that are similar but oppositely oriented, like the right and the left hand.

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]

antitrope

one of two structures that are similar but oppositely oriented, like a right and a left glove.