Obs. [a. med.L. causōn burning fever (Du Cange), a. Gr. καύσων burning heat, f. και-: see CAUSTIC.] ? Inflammation, ? heartburn.
1398. Trevisa, Barth. De P. R. (W. de W.), VII. xli. 254. Somtyme Colera hyghte Causon, for it brennyth and kyndlyth the spyrytuall membres.
1661. Lovell, Hist. Anim. & Min., 202. Some apply it against the heart, to help causons, and heate.
