cotyloid cavity cotyloidal • cotyloid joint · · · Info · Definitions · Synonyms · Characters · · cotyloid cavity · · Text Common · · Latin · · Scripts 15 · · Length 6 · · Syllables Definitions · · · (noun) the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket joint. Synonyms: acetabulum, cotyloid cavity. · · Noun Definition 1 Synonyms · · · acetabulum · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 i latin small letter i U+0069 l latin small letter l U+006C o latin small letter o U+006F t latin small letter t U+0074 v latin small letter v U+0076 y latin small letter y U+0079