Defervescency

from The Collaborative International Dictionary of English v.0.48

Defervescence \De`fer*ves"cence\, Defervescency
\De`fer*ves"cency\, n. [L. defervescere to grow cool.]
   1. A subsiding from a state of ebullition; loss of heat;
      lukewarmness.
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            A defervescency in holy actions.      --Jer. Taylor.
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   2. (Med.) The subsidence of a febrile process; as, the stage
      of defervescence in pneumonia.
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