dicrotic
adjective
di·crot·ic dī-ˈkrä-tik 
1
of the pulse : having a double beat
2
: being or relating to the second part of the arterial pulse occurring during diastole of the heart or of an arterial pressure recording made during the same period
dicrotism
ˈdī-krə-ˌti-zəm
noun 
Word History
Etymology
Greek dikrotos, from di- + krotos rattling noise, beat
First Known Use
circa 1811, in the meaning defined at sense 1
Medical Definition
dicrotic
adjective
di·crot·ic (ˈ)dī-ˈkrät-ik
1
of the pulse : having a double beat (as in certain febrile states in which the heart is overactive and the arterial walls are lacking in tone) compare monocrotic
2
: being or relating to the second part of the arterial pulse occurring during diastole of the heart or of an arterial pressure recording made during the same period