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lumbo-sacral
lumbo-abdominal adj. 
/ˌlʌmbəʊəbˈdɒmᵻnl/, /ˌləmboʊəbˈdɑmən(ə)l/ pertaining to the loins and the abdomen (cf. abdominal adj. and n.); so lumbo-aortic, lumbo-costal, lumbo-inguinal, etc. (see New Sydenham Soc. Lexicon 1889), lumbo-sacral, lumbo-vertebral adjs.
Brit. /ˌlʌmbəʊabˈdɒmᵻnl/
, /ˌlʌmbəʊabˈdɒmᵻnl//ˌlʌmbəʊəbˈdɒmᵻnl/U.S. /ˌləmboʊˌæbˈdɑmən(ə)l/
, /ˌləmboʊˌæbˈdɑmən(ə)l//ˌləmboʊəbˈdɑmən(ə)l/Π
1840 E. Wilson Anatomist's Vade Mecum (1842) 14 The lumbo-sacral nerve.
1856 Quain's Elements Anat. (ed. 6) II. 632 (note) Schmidt describes them as separate nerves, naming the genital branch, external spermatic, and the crural branch, lumbo-inguinal.
1876 T. Bryant Pract. Surg. (ed. 2) I. vii. 256 The lumbo-sacral portion of the column is more frequently affected than any other.
1899 T. C. Allbutt et al. Syst. Med. VI. 217 The lumbo-vertebral anastomotic trunk of Braune.
1899 T. C. Allbutt et al. Syst. Med. VI. 660 Neuralgia of the lumbar plexus, or lumbo-abdominal neuralgia.
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