catacrotic

from The Century Dictionary.

• In physiology, noting that form of pulse-tracing in which the secondary elevations appear on the descending portion of the curve.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Physiol.) Designating, pertaining to, or characterized by, that form of pulse tracing, or sphygmogram, in which the descending portion of the curve is marked by secondary elevations due to two or more expansions of the artery in the same beat.