dĭastŏle, ēs, f., = διαστολή, in gram.,
I The diastole , Diom. p. 470 P. al.—
II The comma , Donat. p. 1742 P.
·noun A figure by which a syllable naturally short is made long. II. Diastole ·noun The rhythmical ...
Webster's Dictionary of the English Language