1. zooid - Noun
2. zooid - Adjective
Pertaining to, or resembling, an animal.
An organic body or cell having locomotion, as a spermatic cell or spermatozooid.
An animal in one of its inferior stages of development, as one of the intermediate forms in alternate generation.
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.
Source: Webster's dictionaryEach colony grows by asexual budding from a single zooid known as the ancestrula, which is round rather than shaped like a normal zooid. Source: Internet
What type of zooid grows where in a colony is determined by chemical signals from the colony as a whole or sometimes in response to the scent of predators or rival colonies. Source: Internet