decidua decidingly • decidual · · · Info · Definitions · Characters · · decidua · · Text Latin · · Script 7 · · Length 4 · · Syllables Definitions · · · (noun) the epithelial tissue of the endometrium. · · Noun Definition 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 u latin small letter u U+0075