WordReference Random House Unabridged Dictionary of American English © 2025
bilat′eral sym′metry, [Biol.]
  1. Developmental Biology, Biologya 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. Cf. radial symmetry.
  • 1850–55

Collins Concise English Dictionary © HarperCollins Publishers::
bilateral symmetry
  1. the property of an organism or part of an organism such that, if cut in only one plane, the two cut halves are mirror images of each other
    See also radial symmetry
'bilateral symmetry' also found in these entries (note: many are not synonyms or translations):
Platyhelminthes - body plan - flatworm - radial symmetry - zygomorphic

Forum discussions with the word(s) "bilateral symmetry" in the title:


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