D defs.my
Entry 2 senses Webster, 1913

Systole

· Sys·to·le · IPA /ˈsɪstəli/
01 n. The shortening of the long syllable.
  1. 1.
    The shortening of the long syllable.(Gram.)
  2. 2.
    The contraction of the heart and arteries by which the blood is forced onward and the circulation kept up; also, the contraction of a rhythmically pulsating contractile vacuole; -- correlative to diastole.(Physiol. & Biol.)