See Also: sipunculid(dictionary)
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calcium carbide (medicine) and sipunculid (iou)


calcium carbide (medicine)


calcium carbide


CaC2;blackish crystalline lumps which when in contact with water yield acetylene gas.


sipunculid (iou)



sipunculid noun & adjective. L19.
[mod. Latin Sipunculidae (see below), from Sipunculus genus name from Latin sipunculus var. of siphunculus: see SIPHUNCLE, -ID3.]
Zoology.
A. noun. Any member of the family Sipunculidae or phylum Sipuncula (formerly Sipunculoidea) of unsegmented burrowing marine worms, which have an anterior retractable proboscis or introvert; a peanut worm. L19.
b. adjective. Of, pertaining to, or designating this family or phylum. M20.
sipunculan noun & adjective = SIPUNCULID L20.
sipunculoid noun & adjective = SIPUNCULID M19.