Ex-āc'er-bā'tion, n.

(egz-ās'er-bā'shun), n. [Fr. exacerbation.]

1. The act of rendering more violent or bitter; the state of being exacerbated or intensified in violence or malignity; as, exacerbation of passion.
2. (Med.) A periodical increase of violence in a disease, as in remittent or continuous fever; an increased energy of diseased and painful action.