- Pectiniform by Webster's
a.) Comblike in form...
- Ctenoplana by Great Soviet Encyclopedia
... ), eight short rows of comblike plates, and a pair of retractable tentacles. Ctenoplana creep along the bottom by constricting muscles or swim by beating the comblike plates. Previously Ctenoplana, along with Coeloplana metschnikowi. And other Platyctenea, were considered a transitional group between the Ctenophora and the Turbellaria; now they are considered ...
- Pectinated by Webster's
... a.) Having very narrow, close divisions, in arrangement and regularity resembling those of a comb; comblike; as, a pectinate leaf; pectinated muscles. See Illust. (e) of Antennae.(a.) Resembling the teeth of a comb.(a.) Interlaced, like two combs.
- Ctenophora by Jared Long
... invertebrate zoology) The comb jellies, a phylum of marine organisms having eight rows of comblike plates as the main locomotory structure.
- Pecopteris by Webster's
... n.) An extensive genus of fossil ferns; -- so named from the regular comblike arrangement of the leaflets.