defervescency

{ } n. [ L. defervescere to grow cool. ] 1. A subsiding from a state of ebullition; loss of heat; lukewarmness. [ 1913 Webster ]

A defervescency in holy actions. Jer. Taylor. [ 1913 Webster ]

2. (Med.) The subsidence of a febrile process; as, the stage of defervescence in pneumonia. [ 1913 Webster ]