pessary pess • pessimal · · · Info · Definitions · Synonyms · Characters · · pessary · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic; it is filled with spermicide and fitted over the uterine cervix. Synonyms: diaphragm, contraceptive diaphragm. · · Noun Definition 1 Synonyms · · · diaphragm · · Synonym 1 contraceptive diaphragm · · Synonym 2 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 y latin small letter y U+0079