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.

Look at other dictionaries:

  • rissoid — ris·soid …   English syllables

  • rissoid — …   Useful english dictionary

  • Corded purg — Drawing of lateral view of the shell of Pyrgulopsis nevadensis. Conservation status …   Wikipedia

  • Fossariidae — Taxobox name = Fossariidae image caption = regnum = Animalia phylum = Mollusca classis = Gastropoda ordo = Mesogastropoda familia = Fossariidae familia authority = subdivision ranks = Genera subdivision = See text.Fossariidae are a family of… …   Wikipedia

  • Marstonia scalariformis — Drawing of apertural view of the shell of Marstonia scalariformis. Conservation status NE[1] …   Wikipedia

  • rissoidean — adjective see rissoid I …   Useful english dictionary

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