weight-bearing synovial joint that articulates, or connects, the hip bone with the the sacrum at the base of the spinal column. Strong ligaments ... [1 related articles] Found on http://www.britannica.com/eb/a-z/s/4
(sa″kro-il´e-ak) pertaining to the sacrum and ilium, or the joint formed between them, or to the lower part of the back where they meet. Found on http://www.encyclo.co.uk/local/21001