Falling of an elevated temperature; abatement of fever. [L. de-fervesco, to cease boiling, fr. de- neg. + fervesco, to begin to boil]
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de·fer·vesce -'ves vi, -vesced; -vesc·ing
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n.
the disappearance of a fever, a process that may occur rapidly or take several days, depending upon the cause and treatment given.
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def·er·ves·cence (def″ər-vesґəns) [L. defervescere to cease boiling] 1. the abatement of fever. 2. the period of abatement of fever.Medical dictionary. 2011.