pleurotomarioid

pleurotomarioid
adjective or noun

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pleurotomarioid, a. and n. Zool.
(ˌplʊərəʊtəʊˈmɛərɪɔɪd)
[f. mod.L. Pleurotomāri-a (f. pleurotoma see next) + -āria (see -ary 1) + -oid.]
a. adj. Resembling the genus Pleurotomaria of gastropod molluscs, having top-shaped shells with a deep cleft in the outer lip; found (living) in deep tropical seas, and (extinct) in many formations from the Silurian onward. b. n. A gastropod of the family Pleurotomariidæ.

Useful english dictionary. 2012.

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