Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
lumbosacral is an adjective meaning "of or relating to or near the small of the back and the back part of the pelvis between the hips". It carries one recorded sense.
of or relating to or near the small of the back and the back part of the pelvis between the hips
Definitions, synonyms and semantic relations for lumbosacral come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.