[lem-nis-kuh s]

noun, plural lem·nis·ci [lem-nis-ahy, -nis-kee] /lɛmˈnɪs aɪ, -ˈnɪs ki/. Anatomy.

a band of fibers, especially of white nerve fibers in the brain.

Origin of lemniscus

1840–50; < New Latin, special use of Latin lēmniscus pendent ribbon < Greek lēmnískos ribbon
Also called fillet, laqueus.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for lemniscus


noun plural -nisci (-ˈnɪsaɪ, -ˈnɪskiː)

anatomy a technical name for fillet (def. 9)

Word Origin for lemniscus

C19: New Latin, from Latin, from Greek lēmniskos ribbon
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for lemniscus

1811, from Late Latin lemniscus "a pendent ribbon." from Greek lemniskos "woolen ribbon," perhaps originally or literally "of Lemnos," island in the Aegean. Related: Lemniscate (1781).

Online Etymology Dictionary, © 2010 Douglas Harper

lemniscus in Medicine



n. pl. lem•nis•ci (-nĭsī′, -nĭskī′, -nĭs)

A bundle of nerve fibers ascending from sensory nuclei in the spinal cord and the rhombencephalon to the thalamus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.