Noah Webster's 1828 American Dictionary of the English Language is regarded by many as the finest English
dictionary ever published. The dictionary is available in many forms. I made the content available here for my own purposes,
out of personal admiration for this particular dictionary.
DIASTOLE, DIASTOLY, n. [Gr., to set or send from.] 1. Among physicians, a dilation of the heart, auricles and arteries; opposed to systole or contraction. 2. In grammar, the extension of a syllable; or a figure by which a syllable naturally short is made long.
diastoly appears in definitions for these words: DiastoleDiastoly