lumbar

adjective

lum·​bar ˈləm-bər  -ˌbär 

: of, relating to, or constituting the loins or the vertebrae between the thoracic vertebrae and sacrum

lumbar region

Examples of lumbar in a Sentence

This seat provides good lumbar support.

Recent Examples on the Web

Georgia sustained several fractures throughout her body, including cervical, lumbar, spine and rib fractures and other physical injuries that required surgeries and other procedures. —Jordan Valinsky, CNN, 2 Oct. 2024

The Saatva Classic Mattress, for example, was named the best mattress for lumbar support by Women's Health editors and spine experts because it was specifically designed for people who suffer from back pain. —Ellen McAlpine, Women's Health, 10 Feb. 2023

For starters, the spacious 215-gallon spa features 29 stainless steel multilevel jets that can be set on a timer and a lounge seat with lumbar support and back jets. —Rachel Klein, Popular Mechanics, 21 Dec. 2022

Do yourself a favor and add a seat cushion or some lumbar support to your car setup. —Karthika Gupta, Condé Nast Traveler, 24 Jan. 2022

Word History

Etymology

New Latin lumbaris, from Latin lumbus loin — more at loin

First Known Use

circa 1656, in the meaning defined above

Phrases Containing lumbar

• lumbar puncture

Kids Definition

lumbar

adjective

lum·​bar ˈləm-bər 

-ˌbär

: of, relating to, or near the loins or the bony regions of the lower spinal column

the lumbar region

Medical Definition

lumbar

adjective

lum·​bar ˈləm-bər, -ˌbär 

1

: of, relating to, or constituting the loins or the vertebrae between the thoracic vertebrae and sacrum

the lumbar region

2

: of, relating to, or being the abdominal region lying on either side of the umbilical region and above the corresponding iliac region