catatricrotism

A condition of the pulse marked by three minor expansions of the artery following the main beat, producing three secondary upward waves on the downstroke of the pulse tracing. [cata- + G. tri-, three, + krotos, beat]

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cata·tri·cro·tism (kat″ə-triґkro-tiz-əm) [cata- + tricrotism] presence of a catatricrotic pulse.