Definition of Rissoid. Meaning of Rissoid. Synonyms of Rissoid
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Definition of 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.