A ridge formed on the surface of flaked stone that results from the intersection of two or more flake removals. The arris marks the location of flake scars on the dorsal surface of chipped stone.Andrefsky, W. (2005) Lithics: Macroscopic Approaches to Analysis. 2d Ed. Cambridge, Cambridge University Press. P. 252
The sharp edge or salient angle formed by two surfaces meeting each other, whether plane or curved; - - applied particularly to the edges in moldings, and to the raised edges which separate the flutings in a Doric column
External angular intersection between two planar faces, or two curved faces (as in moldings), or between two flutes on a Doric column, or between a flute and the fillet on an Ionic or a Corinthian column
The edge at a corner or angle, particularly of finishing such as joinery or plasterwork A sharp arris in hardwood can cut a person's skin and its prone to damage, as is any paint applied over it, which becomes thin from surface tension Arrises are unusually eased or penciled rounded