bladder blad • bladderet · · · Info · Definitions · Synonyms · Characters · · bladder · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a distensible membranous sac (usually containing liquid or gas). Synonyms: vesica. · · Noun Definition 1 (noun) a bag that fills with air. · · Noun Definition 2 Synonyms · · · vesica · · Synonym 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 e latin small letter e U+0065 l latin small letter l U+006C r latin small letter r U+0072