sacroiliac

1 of 2

adjective

sa·​cro·​il·​i·​ac ˌsa-krō-ˈi-lē-ˌak How to pronounce sacroiliac (audio) ˌsā- How to pronounce sacroiliac (audio)
: 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

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Noun
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

Time Traveler
The first known use of sacroiliac was in 1831

Browse Nearby Words

sacrococcyx
sacroiliac
sacrolumbalis
See all Nearby Words

Cite this Entry

“Sacroiliac.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sacroiliac. Accessed 29 Mar. 2025.

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Medical Definition

sacroiliac

1 of 2 adjective
sa·​cro·​il·​i·​ac ˌsak-rō-ˈil-ē-ˌak How to pronounce sacroiliac (audio) ˌsā-krō- How to pronounce sacroiliac (audio)
: 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

More from Merriam-Webster on sacroiliac

Britannica.com: Encyclopedia article about sacroiliac

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