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English definition of “lumbosacral”

lumbosacral

adjective     /ˌlʌm.bəʊˈseɪ.krəl/ US  /ˌlʌm.boʊˈseɪ.krəl/ specialized
relating to the lower back and sacrum (= the large triangular bone at the bottom of the spine): lumbosacral painBone structures
(Definition of lumbosacral adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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