pedal disk

pedal disk

[′ped·əl ‚disk]
(invertebrate zoology)
The broad, flat base of many sea anemones, used for attachment to a substrate.
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References in periodicals archive ?
avis was interposed between the pedal disk of its host anemone and the gastropod shell.
Third, the attachment disk allows the peduncle to move freely under the pedal disk of the sea anemone.