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Related to polychaete: class Polychaeta


Any of various annelid worms of the class Polychaeta, including mostly marine worms such as the lugworm, and characterized by fleshy paired appendages tipped with bristles on each body segment.

[New Latin Polychaeta, class name, from Greek polukhaitēs, with much hair : polu-, poly- + khaitē, long hair.]

pol′y·chaete′, pol′y·chae′tous adj.


(ˈpɒlɪˌkiːt) or


(Animals) any marine annelid worm of the class Polychaeta, having a distinct head and paired fleshy appendages (parapodia) that bear bristles (chaetae or setae) and are used in swimming: includes the lugworms, ragworms, and sea mice
(Animals) of, relating to, or belonging to the class Polychaeta
[C19: from New Latin, from Greek polukhaitēs: having much hair; see chaeta]


(ˈpɒl ɪˌkit)

1. any of various marine annelid worms of the class Polychaeta, having regularly paired body bristles and often other appendages.
2. Also, pol`y•chae′tous. belonging or pertaining to the Polychaeta.
[1885–90; < New Latin Polychaeta, neuter pl. of polychaetus (with change of declension) < Greek polychaítēs having much hair. See poly-, chaeta]


Any of various often brightly colored, meat-eating worms that are related to earthworms and leeches and usually live in the ocean. Each segment of a polychaete has a pair of fleshy appendages that are tipped with bristles, used for swimming or burrowing.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.polychaete - chiefly marine annelids possessing both sexes and having paired appendages (parapodia) bearing bristles
annelid, annelid worm, segmented worm - worms with cylindrical bodies segmented both internally and externally
class Polychaeta, Polychaeta - marine annelid worms
lobworm, lugworm, lug - marine worms having a row of tufted gills along each side of the back; often used for fishing bait
sea mouse - any of several large worms having a broad flattened body with a mat of coarse hairs covering the back
bloodworm - a segmented marine worm with bright red body; often used for bait
References in periodicals archive ?
The fan worm radiolar eye InvC-opsins are most closely related to a brain photoreceptor-expressed opsin in the errant polychaete Platynereis dumerilii, where it is likely involved only in simple illuminance assessment (Arendt et al.
Caption: PAGES 76-77: A) ELSE BOSTELMANN, Bathysphaera intacta Circling the Bathysphere, Bermuda, 1934, Watercolor on paper; B) HELEN DAMROSCH TEE-VAN, Long-spined Giant Squid, Bermuda, 1929, Watercolor on paper; C) ELSE BOSTELMANN, Saber-toothed Viper fish (Chauliodus sloanei) Chasing Ocean Sun fish (Mola mola) Larva, Bermuda, 1934, Watercolor on paper; D) GEORGE SWANSON, Fly Eyes, Carlpito, Venezuela, 1942, Watercolor on paper; E) ISABEL COOPER, Green Parrot Fish, Noma Expedition, 1923, Watercolor on paper; F) HELEN DAMROSCH TEE-VAN, Untitled (Blue Striped Grunt [Haemulon sciurus] and Polychaete Worm), Bermuda, 1933, Watercolor on paper.
A total of 13 species were recorded in the samples of resident benthic macrofauna, representing three crab species, three bivalve species, three gastropod species, and four polychaete species.
Sixty eight species were herein reported and diagnosed with 66 new polychaete species records for Caribbean Costa Rica.
To coincide with the exhibition, scientists at National Museum Cardiff will also coordinate and host the 12th International Polychaete Conference in Cardiff this summer.
Benthic communities are usually dominated by different species of polychaete, oligochaete worms, gastropods, bivalvia and various minor insect larvae.
And in Raible's lab, a polychaete worm flees light--even after beheading.
The list of susceptible invertebrates includes bivalves, odonates (dragonfly nymphs), polychaete worms, isopods and amphipods, decapod shrimps and crabs, as well as native gastropods (Appleton et al.
White croaker selected for non-dredged areas with high polychaete densities (406-700 individuals 0.