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An order of tapeworms with an aquatic life cycle, passing through coracidium, procercoid, and plerocercoid stages before developing into adults in fish, marine mammals, or fish-eating mammals; includes the broad fish tapeworm of humans, Diphyllobothrium latum.
[pseudo- + G. phyllon, leaf]
An order belonging to the class Cestoidea, subclass Cestoda. It includes tapeworms with scolices bearing two lateral (or one terminal) sucking grooves (bothria) and includes Diphyllobothrium latum, the fish tapeworm of humans.