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Definition of: lemniscus
(lem·nis′kəs) noun plural ·nis·ci (-nis′ī)
1. Anat. A bundle or fillet of nerve fibers in the medulla and pons.
2. Zool. One of a pair of club–shaped organs at the base of the proboscis of certain parasitic worms (class A canthocephala). [<NL <L, a ribbon <Gk. lēmniskos]
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