iliolumbar artery

noun
il·​io·​lum·​bar artery | \ ˌil-ē-ō-ˈləm-bər-, -ˌbär- How to pronounce iliolumbar artery (audio) \

Medical Definition of iliolumbar artery

: a branch of the internal iliac artery that supplies muscles in the lumbar region and the iliac fossa