The Collaborative International Dictionary
Orthographic \Or`tho*graph"ic\, Orthographical \Or`tho*graph"ic*al\, a. [Cf. F. orthographique, L. orthographus, Gr. ?.]
Of or pertaining to orthography, or right spelling; also, correct in spelling; as, orthographical rules; the letter was orthographic.
-
(Geom.) Of or pertaining to right lines or angles.
Orthographic projection or Orthogonal projection, that projection which is made by drawing lines, from every point to be projected, perpendicular to the plane of projection. Such a projection of the sphere represents its circles as seen in perspective by an eye supposed to be placed at an infinite distance, the plane of projection passing through the center of the sphere perpendicularly to the line of sight.
Wikipedia
Orthographic projection (or orthogonal projection) is a means of representing a three-dimensional object in two dimensions. It is a form of parallel projection, where all the projection lines are orthogonal to the projection plane, resulting in every plane of the scene appearing in affine transformation on the viewing surface. A lens providing an orthographic projection is known as an (object-space) telecentric lens.
The term orthographic is also sometimes reserved specifically for depictions of objects where the axis or plane of the object is also parallel with the projection plane, as in multiview orthographic projections.
Usage examples of "orthographic projection".
Gay used orthographic projection, so the 45' parallels were straight lines.
Gay used orthographic projection, so the 45th parallels were straight lines.