- any of the individuals of a compound organism.
- any individual, or the individuals collectively, produced from a single egg.
- zooid.
- a combining form meaning “animal,” “organism” of the kind specified by the initial element, often corresponding to zoological class names ending in -zoa, with -zoon used to name a single member of such a class: protozoon.
- a less common term for zooid (def. 1)
- indicating an individual animal or an independently moving entity derived from an animal
