[sa.cro.il.i.ac] adj [prob. fr. F sacro-iliaque, fr. NL sacrum + F iliaque iliac] (1831): of, relating to, or being the region of juncture of the sacrum and ilium
[2]sacroiliac n (1936): the sacroiliac region; also: its firm fibrous cartilage
[sa.cro.il.i.ac] adj [prob. fr. F sacro-iliaque, fr. NL sacrum + F iliaque iliac] (1831): of, relating to, or being the region of juncture of the sacrum and ilium
[2]sacroiliac n (1936): the sacroiliac region; also: its firm fibrous cartilage
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012