Definition of lumbar adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈlʌmbə(r)//
; NAmE NAmE//ˈlʌmbər//
[only before noun] (medical)
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relating to the lower part of the back pain in the lumbar region Word Origin mid 17th cent.: from medieval Latin lumbaris, from Latin lumbus ‘loin’.
See the Oxford Advanced American Dictionary entry: lumbar

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