Mathematics Having perpendicular lines.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "orthographic" in a sentence
"Examples of classifying adjectives are orthographic 'referring to orthography' as in orthographic reform and physical 'referring to physics' as in physical experiment."
"There were three views of the piece, a top, front and side, drawn in what I learned was called orthographic projection."
"A new kind of orthographic evolutionary pressure in English?"