polychaetes

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Definition of polychaetes in English English dictionary: plural of polychaete
polychaete: Any of about 5,400 species of marine worms of the annelid class Polychaeta, having a segmented body with many setae (bristles) on each segment. Species, often brightly coloured, range from less than 1 in. (2.5 cm) to about 10 ft (3 m) long. Most body segments bear two bristly parapodia (lobelike outgrowths). The head has short sensory projections and tentacles. Adults may be free-swimming or sedentary; larvae are free-swimming. Found worldwide, polychaetes are important for turning over sediment on the ocean bottom. One species, the bloodworm, is a popular saltwater fish bait. See also tube worm
polychaete: chiefly marine annelids possessing both sexes and having paired appendages (parapodia) bearing bristles
polychaete: alternative spelling of polychete

polychaetes

Etymology

[ 'pä-lE-"kEt ] (noun.) 1896. ultimately from Greek polychaitEs having much hair, from poly- + chaitE long hair.

History

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