monstrātĭo: ōnis, f. id.,
I a showing, direction (only in Terence and Vitruv.): defessus sum ambulando: ut, Syre, te cum tuā Monstratione magnus perdat Juppiter, direction, Ter. Ad. 4, 6, 1: solers et expedita monstratio, indication, hint, Vitr. 6, 1, 12.