part of innominate bone GAID:205 innominate innominate bone os coxa os innominatum hip bone pelvic bone A fused bone consisting of the ilium, ischium and pubis. Together with the sacrum and coccyx, it comprises the pelvis. [WP,modified]. coxal bone SCTID:361776002 FMA:16585 bone of pelvic girdle Wikipedia:Hip_bone basipterygium os coxae hip pelvic girdle bone/zone flat bone lateral structure