Ex*ac`er*ba"tion (?) n. [Cf. F. exacerbation.]
The act rendering more violent or bitter; the state of being exacerbated or intensified in violence or malignity; as, exacerbation of passion.
A periodical increase of violence in a disease, as in remittent or continious fever; an increased energy of diseased and painful action.
© Webster 1913.