Obs. Also 78 exestuation. [ad. L. exæstuātiōn-em, n. of action f. exæstuā-re: see prec.] A boiling up; fermentation.
1666. G. Harvey, Morb. Angl., iv. (1672), 434. If the patient is discommoded with a glowing heat under the short ribs, you may suppose it to be an exæstuation.
1710. T. Fuller, Pharm. Extemp., 296. These Earths mix in with it [the Bile] and put a restraint upon its preternatural exestuation.
17306. in Bailey (folio).
1775. in Ash.