Medical Dictionary


noun ili·a·cus \i-ˈlī-ə-kəs\

Medical Definition of iliacus



  1. :  a muscle of the iliac region of the abdomen that flexes the thigh or bends the pelvis and lumbar region forward, has its origin from the iliac fossa, iliac crest, the base of the sacrum, and adjoining parts, and is inserted into the outer side of the tendon of the psoas major, the capsule of the hip joint, and the lesser trochanter of the femur

Illustration of iliacus

Seen and Heard

What made you want to look up iliacus? Please tell us where you read or heard it (including the quote, if possible).