† jenˈtationObs.rare. [ad. L. jentātiōn-em, n. of action from jentāre: see prec.] Breakfast. 1599A. M. tr.Gabelhouer's Bk. Physicke 36/1 Administre heerof to the Patient fasting..2 howers before his ientatione.1604R. Cawdrey Table Alph., Ientation, breakefast.