Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to operculated: Miracidium, coracidium


Provided with a lid (operculum); denoting members of the mollusk class Gastropoda (snails), subclass Prosobranchiata (operculate snails), and the eggs of certain parasitic worms such as the digenetic trematodes (except the schistosomes) and the broad fish tapeworm, Diphyllobothrium latum.
References in periodicals archive ?
Diagnosis of diphyllobothriasis is by identification of operculated eggs on fecal flotation or by identifying the long chains of proglottids segments of the adult worm.
In one hair sample, 98 operculated and 265 non-operculated eggs were isolated.
Five of the samples were harvested from totally operculated combs, scraped and sieved in the laboratory; the other five samples were extracted by centrifugation.
Eggs numerous, ovoid, thin shelled, operculated, usually collapsed in mounted specimens, golden yellowish, different in size, measure 0.
Fascioliasis is diagnosed by the identification of oval, operculated, golden eggs (130 x 75 [micro]m) via fecal sedimentation techniques (simple cup sedimentation using tap water, formaldehyde-ether concentration) (Figure 6-66).