Share this entry
Polychaeta Line breaks: Poly|chaeta
Pronunciation: /ˌpɒlɪˈkiːtə/

Definition of Polychaeta in English:

plural noun

A class of marine annelid worms which comprises the bristle worms.
Example sentences
  • These include some Foraminiferida, Hydrozoa and Scleractinia, Bryozoa, Brachiopoda, Pelecypoda, Polychaeta, and Cirripedia.
  • In traditional classification schemes, the Annelida consists of the Polychaeta and the Clitellata (the latter including the Oligochaeta and Hirudinida).
  • The phylum Annelida is traditionally divided into three classes: Oligochaeta, Hirudinida, and Polychaeta (marine annelids).


Modern Latin (plural), from Greek polu- 'many' + khaitē 'mane' (taken to mean 'bristle').

Definition of Polychaeta in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources