Word Study
nematocyst
CIDE DICTIONARY
nematocyst, n. [Nemato- + cyst.].
A lasso cell, or thread cell. See Lasso cell, under Lasso. [1913 Webster]
OXFORD DICTIONARY
nematocyst, n. a specialized cell in a jellyfish etc. containing a coiled thread that can be projected as a sting.
Etymology
as NEMATODE + CYST
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