资料来源 : Webster's Revised Unabridged Dictionary (1913)

Predicrotic \Pre`di*crot"ic\, a. (Physiol.)
   A term applied to the pulse wave sometimes seen in a pulse
   curve or sphygmogram, between the apex of the curve and the
   dicrotic wave.

         The predicrotic or tidal wave is best marked in a hard
         pulse, i. e., where the blood pressure is high.
                                                  --Landois &
                                                  Stirling.