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Sintu
sinuate
sinuosity
sinuous
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Sinus Iridum
sinus node
sinus venosus
sinusitis
sinusoid
sinusoidal projection
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sipunculid

si·pun·cu·lid [ s púngkyəlid ] (plural si·pun·cu·lids)


noun 
Definition:
 
sea worm with tentacles: a burrowing or crevice-dwelling sea worm that gathers food particles using tentacles surrounding its mouth and can retract its front end into its trunk. Phylum Sipuncula.

[Late 19th century. < modern Latin Sipunculidae< Latin sipunculus, variant of siphunculus (see siphuncle)]
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