diastole diaster • diastolic · · · Info · Definitions · Characters · · diastole · · Text Latin · · Script 8 · · Length 4 · · Syllables Definitions · · · (noun) the widening of the chambers of the heart between two contractions when the chambers fill with blood. · · Noun Definition 1 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074