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n. [ Cholecystis + Gr. te`mnein to cut. ] (Surg.) The operation of making an opening in the gall bladder, as for the removal of a gallstone. [ 1913 Webster ]

‖n. [ NL., fr. Gr. 3 an oil flask. ] (Bot.) A genus of gigantic trees, chiefly Brazilian, of the order Myrtaceæ, having woody capsules opening by an apical lid. Lecythis Zabucajo yields the delicious sapucaia nuts. Lecythis Ollaria produces the monkey-pots, its capsules. Its bark separates into thin sheets, like paper, used by the natives for cigarette wrappers. [ 1913 Webster ]

n. 1. A marine or freshwater mollusk having a soft body with platelike gills enclosed within two shells hinged together; a member of the Pelecypoda.
Syn. -- bivalve, lamellibranch. [ WordNet 1.5 ]

‖n. pl. [ NL., fr. Gr. pe`lekys a hatchet + -poda. ] (Zool.) Same as Lamellibranchia. [ 1913 Webster ]