Definition of polychaete in US English:


(US polychete)


  • A marine annelid worm of the class Polychaeta; a bristle worm.

    • ‘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.’
    • ‘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.’
    • ‘Subsequently work on a brittle star showed expression of the gene in the tube feet, and many found it difficult to equate the tube feet of echinoderms with the parapodia of polychaetes or the arthropod limb.’
    • ‘Such a scenario would be consistent with the fact that Recent crinoids serve as substrate for a large variety of organisms, including annelids, arthropods, gastropods, fish, ophiuroids, and polychaetes.’


  • Relating to or denoting polychaetes.

    • ‘Although wormlike, cornulitids may not have been polychaete worms.’
    • ‘Generally benthic feeders, many butterflyfishes eat small invertebrates, sponges or polychaete worms.’
    • ‘The annelids include earthworms, polychaete worms, and leeches.’
    • ‘Little is known about their diet at sea, but it includes fish, crustaceans, and polychaete worms.’
    • ‘Similar, and even greater evolutionary conservatism has been noted among other polychaete families.’