WordReference Random House Unabridged Dictionary of American English © 2015
Developmental Biologyany organic body or cell capable of spontaneous movement and of an existence more or less apart from or independent of the parent organism.
Developmental Biologyany animal organism or individual capable of separate existence, and produced by fission, gemmation, or some method other than direct sexual reproduction.
Developmental Biologyany one of the recognizably distinct individuals or elements of a compound or colonial animallike organism, whether or not detached or detachable.
Developmental BiologyAlso,zo•oi′dal. pertaining to, resembling, or of the nature of an animal.
Collins Concise English Dictionary © HarperCollins Publishers::
zooid /ˈzəʊɔɪd/ n
- any independent animal body, such as an individual of a coelenterate colony
- a motile cell or body, such as a gamete, produced by an organism
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