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Webster 1913 Edition

Presystolic

Preˊsys-tol′ic

,

Adj.

(Physiol.)

Preceding the systole or contraction of the heart;

as, the

presystolic

friction sound

.

Definition 2024

presystolic

presystolic

English

Adjective

presystolic ‎(not comparable)

(physiology) Preceding the systole or contraction of the heart.
the presystolic friction sound