"correct or proper spelling," c.1450, from M.Fr. orthographie (O.Fr. ortografie, 13c.), from L. orthographia, from Gk. orthos "correct" + root of graphein "to write."
Or*thog"ra*phy\, n. [OE. ortographie, OF. orthographie, L. orthographia, Gr. ?, fr. ? writing correctly; 'orqo`s right + gra`fein to write. See Ortho-, and Graphic.]1. The art or practice of writing words with the proper letters, according to standard usage; conventionally correct spelling; also, mode of spelling; as, his orthography is vicious. When spelling no longer follows the pronunciation, but is hardened into orthography. --Earle. 2. The part of grammar which treats of the letters, and of the art of spelling words correctly. 3. A drawing in correct projection, especially an elevation or a vertical section.