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Pronunciation varies by accent · noun
Any of numerous species of tubicolous annelids of the genus Serpula and allied genera of the family Serpulidae that secrete a calcareous tube, usually irregularly contorted, but sometimes spirally coiled, with a wreath of plumelike and often bright-colored gills around its head, and usually an operculum to close the aperture of its tube when it retracts..
Use serpula when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Serpula means Any of numerous species of tubicolous annelids of the genus Serpula and allied genera of the family Serpulidae that secrete a calcareous tube, usually irregularly contorted, but sometimes spirally coiled, with a wreath of plumelike and often bright-colored gills around its head, and usually an operculum to close the aperture of its tube when it retracts..
Common synonyms include calcareous tubeworm, serpulid tubeworm, fanworm, plume worm.
The opposite depends on the specific sense.
Use serpula where its definition matches the intended context.
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