cœlomocœla

from The Century Dictionary.

• In Lankester's classification, a grade of Enterozoa in which the cœloma is present as an independent second cavity, as opposed to the Enterocœla (which see), in which the sole cavity is the enteron. In this grade are included all groups of Enterozoa except the Hydromedusæ, Scyphomedusæ, Anthozoa, and Ctenophora. Same as Cœlomata, 1.