from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of, relating to, or affecting the sacrum and ilium and their articulation or associated ligaments.
- n. The sacroiliac region or cartilage.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Referring to the region of the sacrum and the ilium in the lower back.
- n. The region of the sacrum and the ilium in the lower back.
sacro- + iliac (Wiktionary)