Dictionary

1sacroiliac

adjective sa·cro·il·i·ac \ˌsa-krō-ˈi-lē-ˌak, ˌsā-\

Definition of SACROILIAC

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

Origin of SACROILIAC

probably from French sacro-iliaque, from New Latin sacrum + French iliaque iliac
First Known Use: 1831

2sacroiliac

noun

Definition of SACROILIAC

:  the sacroiliac region; also :  its firm fibrous cartilage

First Known Use of SACROILIAC

1936

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