'Zooid' definitions:

Definition of 'zooid'

From: WordNet
noun
One of the distinct individuals forming a colonial animal such as a bryozoan or hydrozoan

Definition of 'Zooid'

From: GCIDE
  • Zooid \Zo"oid\, a. [Zoo- + -oid.] (Biol.) Pertaining to, or resembling, an animal. [1913 Webster]

Definition of 'Zooid'

From: GCIDE
  • Zooid \Zo"oid\, n.
  • 1. (Biol.) An organic body or cell having locomotion, as a spermatic cell or spermatozooid. [1913 Webster]
  • 2. (Zool.) (a) An animal in one of its inferior stages of development, as one of the intermediate forms in alternate generation. (b) One of the individual animals in a composite group, as of Anthozoa, Hydroidea, and Bryozoa; -- sometimes restricted to those individuals in which the mouth and digestive organs are not developed. [1913 Webster]