sys·tol·ic /sɪsˈtɑlɪk/ 形容詞
  收縮期的
  Sys·to·le n.
  1. Gram. The shortening of the long syllable.
  2. Physiol. & Biol. 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. -- Sys*tol*ic a.
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  Sys·tol·ic a. Of or pertaining to systole, or contraction; contracting; esp., relating to the systole of the heart; as, systolic murmur.
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  systolic
       adj : of or relating to a systole or happing during a systole