- Planorbidae
- Pla·nor·bi·dae plə-'nȯr-bə-.dē n pl a family of freshwater pulmonate snails having a single pair of tentacles with an eye at the base of each and gills as well as lungs and including numerous forms important as intermediate hosts of pathogenic trematode worms see PLANORBISpla·nor·bid -bəd adj or n
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Pla·nor·bi·dae (plə-norґbĭ-de) [L. planus flat + orbis ring + -idae] a large family of pulmonate fresh-water snails (suborder Basommatophora, order Pulmonata), many species of which are intermediate hosts of pathogenic trematodes; it includes the genera Biomphalaria, Bulinus, Segmentina, and Planorbis (the type genus).
Medical dictionary. 2011.