n.
Pronunciation: ˌ d ē -( ˌ )f ə r- ' ve-s ə n(t)s, ˌ de-f ə r-
Function: noun
Etymology: German Deferveszenz, from Latin defervescent-, defervescens, present participle of defervescere to stop boiling, from de- + fervescere to begin to boil ― more at EFFERVESCE
Date: 1866
: the subsidence of a fever