zygomorphous


From The Collaborative International Dictionary of English v.0.48:

Zygomorphic \Zyg`o*mor"phic\, Zygomorphous \Zyg`o*mor"phous\, a.
   [Gr. zygo`n a yoke + ? form.] (Biol.)
   Symmetrical bilaterally; -- said of organisms, or parts of
   organisms, capable of division into two symmetrical halves
   only in a single plane.
   [1913 Webster]
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