Bryozoa \Bry`o*zo"a\, n. pl. [NL., fr. Gr. ? moss + ? animal.]

(Zool.) A class of Molluscoidea, including minute animals which by budding form compound colonies; -- called also Polyzoa. [1913 Webster]

Note: They are often coralike in form and appearance, each small cell containing an individual zooid. Other species grow in delicate, flexible, branched forms, resembling moss, whence the name. Some are found in fresh water, but most are marine. The three principal divisions are Ectoprocta, Entoprocta, and Pterobranchia. See Cyclostoma, Chilostoma, and Phylactolema. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Entoprocta \En`to*proc"ta\, n. pl. [NL., fr. Gr. ? within + ? the anus.]

(Zo["o]l.) A group of Bryozoa in which the anus is within the circle of tentacles. See Pedicellina. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Entoprocta

Source: WordNet (r) 2.0
 

Entoprocta \En`to*proc"ta\, n. pl. [NL., fr. Gr. ? within + ? the anus.]

(Zo["o]l.) A group of Bryozoa in which the anus is within the circle of tentacles. See Pedicellina.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Bryozoa \Bry`o*zo"a\, n. pl. [NL., fr. Gr. ? moss + ? animal.]

(Zo["o]l.) A class of Molluscoidea, including minute animals which by budding form compound colonies; -- called also Polyzoa.

Note: They are often coralike in form and appearance, each small cell containing an individual zooid. Other species grow in delicate, flexible, branched forms, resembling moss, whence the name. Some are found in fresh water, but most are marine. The three principal divisions are Ectoprocta, Entoprocta, and Pterobranchia. See Cyclostoma, Chilostoma, and Phylactolema.

Source: Webster's Revised Unabridged Dictionary (1913)