SYS'TOLE SYS'TOLY, noun [Gr. to contract; to send.] 1. In grammar, the shortening of a long syllable. 2. In anatomy, the contraction of the heart for expelling the blood and carrying on the circulation. [See Diastole.]
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI