sa·cro·il·i·ac
ˌsa-krō-ˈi-lē-ˌak 
ˌsā-
ˌsā-
: of, relating to, or being the region of the joint between the sacrum and ilium
sacroiliac pain
: the sacroiliac region
also
: its firm fibrous cartilage
Examples of sacroiliac in a Sentence
Recent Examples on the Web
Katie Camero, SELF, 20 June 2025
The only certainty on the team’s midday injury report was guard Duncan Robinson being listed as available after previously missing time due to left sacroiliac joint dysfunction.
—Ira Winderman, Sun Sentinel, 7 Apr. 2025
But the Heat was also short-handed, missing Nikola Jovic (broken right hand), Kevin Love (personal reasons), Duncan Robinson (left sacroiliac joint dysfunction), Dru Smith (Achilles surgery) and Andrew Wiggins (right hamstring tendinopathy) on Wednesday.
—Anthony Chiang, Miami Herald, 3 Apr. 2025
Sharpshooting swingman Duncan Robinson is on the shelf due to left sacroiliac joint dysfunction.
—Josh Hammer, MSNBC Newsweek, 31 Mar. 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
The Connection Between Tailbone Pain and Sacroiliac Joint Pain
The two sacroiliac joints (one on either side of your lower spine) connect your sacrum (the bone that connects your spine to your pelvis) to your hip bone.
—Anna Giorgi, Verywell Health, 12 July 2024
Sacroiliac Joint Disorders The sacroiliac (SI) joint connects the pelvis to the sacrum, the triangular bone between the lower spine and tailbone.
—Stuart Hershman, Verywell Health, 26 June 2023
These include sacroiliac joint derangement, piriformis syndrome and scoliosis, Fishman says.
—Daryl Austin, USA TODAY, 13 May 2023
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Noun
With these conditions, which are considered forms of arthritis, your immune system attacks your spine, causing chronic inflammation in the sacroiliac joints that connect your lower back and pelvis.
—Katie Camero, SELF, 20 June 2025
The only certainty on the team’s midday injury report was guard Duncan Robinson being listed as available after previously missing time due to left sacroiliac joint dysfunction.
—Ira Winderman, Sun Sentinel, 7 Apr. 2025
But the Heat was also short-handed, missing Nikola Jovic (broken right hand), Kevin Love (personal reasons), Duncan Robinson (left sacroiliac joint dysfunction), Dru Smith (Achilles surgery) and Andrew Wiggins (right hamstring tendinopathy) on Wednesday.
—Anthony Chiang, Miami Herald, 3 Apr. 2025
Sharpshooting swingman Duncan Robinson is on the shelf due to left sacroiliac joint dysfunction.
—Josh Hammer, MSNBC Newsweek, 31 Mar. 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
The Connection Between Tailbone Pain and Sacroiliac Joint Pain
The two sacroiliac joints (one on either side of your lower spine) connect your sacrum (the bone that connects your spine to your pelvis) to your hip bone.
—Anna Giorgi, Verywell Health, 12 July 2024
Sacroiliac Joint Disorders The sacroiliac (SI) joint connects the pelvis to the sacrum, the triangular bone between the lower spine and tailbone.
—Stuart Hershman, Verywell Health, 26 June 2023
These include sacroiliac joint derangement, piriformis syndrome and scoliosis, Fishman says.
—Daryl Austin, USA TODAY, 13 May 2023
Cite this Entry
“Sacroiliac.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sacroiliac. Accessed 18 Jul. 2025.
Copy CitationMedical Definition
sacroiliac
1 of 2 adjective
sa·cro·il·i·ac
ˌsak-rō-ˈil-ē-ˌak
ˌsā-krō-
ˌsā-krō-
sacroiliac
2 of 2 nounLove words? Need even more definitions?
Merriam-Webster unabridged
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