Rissoid

Rissoid
Rissoid Ris"soid, n. [NL. Rissoa, the typical genus ( fr. A. Risso, an Italian naturalist) + -oid.] (Zo["o]l.) Any one of very numerous species of small spiral gastropods of the genus {Rissoa}, or family {Rissoid[ae]}, found both in fresh and salt water. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • rissoidean — adjective see rissoid I …   Useful english dictionary

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