Combining form of Gr. κοτύλη, κότυλος: see COTYLE; as in cotylo-pubic, -sacral, adjs., pertaining to the cotyle or socket of the hip-joint and to the pubis (or sacrum).
1859. Todd, Cycl. Anat., V. 132/1. The cotylo-sacral rib of the ilium. Ibid., 139/2. The cotylo-pubic arch … resists the starting outward of the ends of the cotylo-sacral arch.
