| iliolumbar artery | (n) an artery that originates in the internal iliac artery and supplies the pelvic muscles and bones, Syn. arteria iliolumbalis |
| iliolumbar vein | (n) a branch of the internal iliac vein, Syn. vena iliolumbalis |
| Iliolumbar | a. (Anat.) Pertaining to the iliac and lumbar regions; |