sacroiliac

1 of 2

adjective

sa·​cro·​il·​i·​ac ˌsa-krō-ˈi-lē-ˌak  ˌsā- 

: of, relating to, or being the region of the joint between the sacrum and ilium

sacroiliac pain

sacroiliac

2 of 2

noun

: the sacroiliac region

also : its firm fibrous cartilage

Examples of sacroiliac in a Sentence

Recent Examples on the Web

Noun

Pelvic floor dysfunction symptoms can present in a variety of ways, including discomfort or pain in the hips, groin, low back, or sacroiliac joints, which connect the pelvis and lower spine, as well as abdominal pain. — Jordan Smith, Outside, 11 Sep. 2025

The inflammatory condition affects the lower back, spine, and sacroiliac joints, which connect the bottom of your spinal column to your pelvis. — Alice Oglethorpe, SELF, 18 July 2025

For example, in his study, reimbursement for sacroiliac fusion performed by non-surgeons rose by 435% over a decade. — Richard Menger Md Mpa, Forbes, 4 Dec. 2024

Word History

Etymology

Adjective

probably from French sacro-iliaque, from New Latin sacrum + French iliaque iliac

First Known Use

Adjective

1831, in the meaning defined above

Noun

1936, in the meaning defined above

Medical Definition

sacroiliac

1 of 2 adjective

sa·​cro·​il·​i·​ac ˌsak-rō-ˈil-ē-ˌak  ˌsā-krō- 

: of, relating to, affecting, or being the region of the joint between the sacrum and the ilium

sacroiliac distress

sacroiliac

2 of 2 noun

: sacroiliac joint