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.
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(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.
Wiktionary
a. 1 Of, or relating to orthography; spelled correctly. 2 (context cartography English) orthographic.
Usage examples of "orthographical".
The autograph copy of the above list contains some of those orthographical blunders which Bonaparte so frequently committed.
I hope that the time is near when even that advanced spelling reformer will be left far in the rear by the progress of a people thoroughly weary of longer slavery to the orthographical absurdities handed down to us from a remote and grossly unlearned ancestry.