Hypertext Webster Gateway: "orthographical"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Orthographic \Or`tho*graph"ic\, Orthographical
\Or`tho*graph"ic*al\, a. [Cf. F. orthographique, L.
orthographus, Gr. ?.]
1. Of or pertaining to orthography, or right spelling; also,
correct in spelling; as, orthographical rules; the letter
was orthographic.
2. (Geom.) Of or pertaining to right lines or angles.
{Orthographic 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.
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