biradial symmetry

biradial symmetry

[bī′rād·ē·əl ′sim·ə·trē]
(biology)
Symmetry both radial and bilateral. Also known as disymmetry.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Cnidarians are considered to be radially symmetrical around their longitudinal body axis, called the oral-aboral axis, whereas ctenophores display "biradial symmetry" around their oralaboral axis.