[luhm-ber, -bahr]
  1. a lumbar vertebra, artery, or the like.

Origin of lumbar

From the New Latin word lumbāris, dating back to 1650–60. See lumb-, -ar1
Related formspre·lum·bar, adjectivesub·lum·bar, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Contemporary Examples of lumbar

Historical Examples of lumbar

British Dictionary definitions for lumbar


  1. of, near, or relating to the part of the body between the lowest ribs and the hipbones

Word Origin for lumbar

C17: from New Latin lumbāris, from Latin lumbus loin
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 lumbar

"pertaining to or situated near the loins," 1650s, from Modern Latin lumbaris, from Latin lumbus "loin" (see lumbago).

Online Etymology Dictionary, © 2010 Douglas Harper

lumbar in Medicine


[lŭmbər, -bär′]
  1. Of, near, or situated in the part of the back and sides between the lowest ribs and the pelvis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

lumbar in Science


  1. Located at or near the part of the back lying between the lowest ribs and the hips.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.