Noun | 1. | ![]() Ctenophora, phylum Ctenophora - comb jellies; sea acorns; a small phylum formerly considered a class of Coelenterata Cydippea, Cydippida, Cydippidea, order Cydippea, order Cydippida, order Cydippidea - ctenophores having two long pinnate tentacles order Platyctenea, Platyctenea - an order of Tentaculata Cestida, order Cestida - ctenophore having short tentacles; one family Lobata, order Lobata - ctenophore having tentacles only in the immature stage; body compressed vertically having two large oral lobes and four pointed processes class - (biology) a taxonomic group containing one or more orders |