Definition of polychaete in English:


Syllabification: pol·y·chaete
Pronunciation: /ˈpälēˌkēt
(also polychete)


  • A marine annelid worm of the class Polychaeta; a bristle worm.
    More example sentences
    • There are more than 50 fish species whose lives are linked to Sargassum, and a myriad of invertebrates, including gastropods, polychaetes, bryozoans, anemones, and sea-spiders.
    • The focal stage for this analysis is the early period of embryo encapsulation, a mode of development that has evolved several times among gastropods, polychaetes, nemerteans and flatworms.
    • Sponges are preyed upon by gastropods, polychaetes, asteroids, echinoids, turtles, and fishes.


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  • Relating to or denoting polychaetes.
    More example sentences
    • Generally benthic feeders, many butterflyfishes eat small invertebrates, sponges or polychaete worms.
    • Similar, and even greater evolutionary conservatism has been noted among other polychaete families.
    • Little is known about their diet at sea, but it includes fish, crustaceans, and polychaete worms.



Pronunciation: /ˌpälēˈkētəs/
More example sentences
  • The observed pattern of the nervous system is very similar to that found in many polychaetous annelids.
  • A similar argument can be applied to the interpretation of Wiwaxia, a problematic ‘worm’ from the Burgess Shale that Walcott compared to modern polychaetous scale-worms.

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