• (a.) Of or pertaining to both the sacrum and the hip; as, the sacrosciatic foramina formed by the sacrosciatic ligaments which connect the sacrum and the hip bone.
(sa″kro-si-at´ik) pertaining to the sacrum and ischium.
Sa`cro·sci·at'ic adjective (Anat.) Of or pertaining to both the sacrum and the hip; as, the sacrosciatic foramina formed by the sacrosciatic ligaments which connect the sacrum and the hip bone. 
Type: Term Pronunciation: sā′krō-sī-at′ik Definitions: 1. Relating to both sacrum and ischium.