Entoprocta

from The Century Dictionary.

• One of two divisions of Polyzoa established by Nitsche (the other being Ectoprocta), including those Polyzoa in which the anus opens within the circlet of tentacles of the lophophore.

from the GNU version of the Collaborative International Dictionary of English.

• noun plural (Zoöl.) A group of Bryozoa in which the anus is within the circle of tentacles. See pedicellina.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• proper noun A taxonomic phylum within the kingdom Animalia — many small sessile aquatic animals having a crown of tentacles surrounding a mouth and anus.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun sometimes considered a subphylum of Bryozoa