/ Thesaurus / C Synonyms of cotyloid cavity Find synonyms for: Noun1. acetabulum, cotyloid cavity, socketusage: the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket jointWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language