a two-dimensional graphic representation of an object in which the projecting lines are at right angles to the plane of the projection.Also called orthogonal projection.Compare isometric(def 5).

British Dictionary definitions for orthogonal projection

orthogonal projection

noun

engineeringthe method used in engineering drawing of projecting views of the object being described, such as plan, elevation, side view, etc, at right angles to each other

orthographic projection

noun

a style of engineering drawing in which true dimensions are represented as if projected from infinity on three planes perpendicular to each other, avoiding the effects of perspective

a type of zenithal map projection in which the area is mapped as if projected from infinity, with resulting distortion of scale away from the centre