BASE
, Basis, in Architecture, denotes the lower part of a column or pedestal.
Base, in Geometry, the lowest side of any figure. Any side of a figure may be considered as its base, according to the position in which it may be conceived as standing; but commonly it is understood of the lowest side: as the base of a triangle, of a cone, cylinder, &c.
Base Line, in Perspective, denotes the common section of the picture and the geometrical plane.
Base Ring, of a Cannon, is the great ring next behind the vent or touch-hole.
Base, alternate. See Alternate.