Definitions
from The Century Dictionary.
- noun The pentagonal area in the center of the oral surface of an echinoderm which is occupied by the peristome and mouth.
- noun The oral orifice of an actinozoan.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Zoöl.) The mouth or anterior opening of a cœlenterate animal.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun zoology The
mouth oranterior opening of acoelenterate animal .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Ancient Greek ray + mouth.
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Examples
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