quartan Hear it!

quartan Definition

quar·tan (kwôrt′'n)

adjective

occurring every fourth day, counting both days of occurrence: said of a fever

Etymology: ME quartaine < MFr (fièvre) quartaine < L (febris) quartana, (fever) occurring every fourth day, fem. of quartanus < quartus, fourth: see quart

noun

a type of malaria in which the paroxysms occur every fourth day