radial symmetry

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Related to radially symmetrical: bilaterally symmetrical, bilateral symmetry

symmetry

 [sim´ĕ-tre]
correspondence in size, form, and arrangement of parts on opposite sides of a plane, or around an axis. adj., adj symmet´rical.
bilateral symmetry the configuration of an irregularly shaped body (such as the human body or that of higher animals) that can be divided by a longitudinal plane into halves that are mirror images of each other.
radial symmetry that in which the body parts are arranged regularly around a central axis.

radial symmetry

n.
Symmetrical arrangement of constituents, especially of radiating parts, about a central point.

radially symmetrical adj.

radial symmetry

an animal body structure in which any section through the mouth and down the body length divides the body into identical halves. Coelenterates, ctenophores (sea gooseberries) and echinoderms are all radially symmetrical. Compare BILATERAL SYMMETRY.
References in periodicals archive ?
They were short shoots, composed of a radially symmetrical axis carrying spirally arranged appendages, some of which were fertile and bore terminal ovules.
One distinct feature of ctenophores, which sets them apart from other radially symmetrical forms, is their phylum-specific, highly stereotyped mode of development (see 1-3 for reviews).
I showed students that in order to create a radially symmetrical drawing correctly, it had to look the same no matter how it was turned.