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zooid Syllabification: zo·oid
Pronunciation: /ˈzōoid/

Definition of zooid in English:


An animal arising from another by budding or division, especially each of the individuals that make up a colonial organism and typically have different forms and functions.
Example sentences
  • The most integrated colonies behave like individual organisms, for the zooids making up the colony are all specialized for certain functions and connected to each other.
  • The individuals of the colony are called zooids and many zooids with individual siphonal openings cover the surface of the colony.
  • Even in the earliest stages of new growth, complete reversals in budding directions of zooids are evident.


Pronunciation: /ˌzōˈoidl/
Example sentences
  • Therefore, the two growth constants, isochronous growth levels and simultaneous secretion across shared zooidal boundaries, apply to primary cystiphragm-cortex units.
  • The rest of the colony surface, including the maculae, is occupied by kenozooids with thick walls forming polygonal ridges at zooidal boundaries, the ridges occasionally prolonged into short apertural spines.
  • Large cystiphragmconstricted zooidal void spaces, a low overall proportion of zooecial space, and a low overall proportions of space taken up by cystiphragms.


Mid 19th century: from zoo- 'relating to animals' + -oid.

Definition of zooid in:
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