bilateral symmetry
noun Biology.
a basic body plan in which the left and right sides of the organism can be divided into approximate mirror images of each other along the midline.
Compare radial symmetry.
Origin of bilateral symmetry
First recorded in 1850–55
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bilateral symmetry
noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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bilateral symmetry
n.
The American Heritage® Stedman's Medical Dictionary
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bilateral symmetry
[bī-lăt′ər-əl]
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.