orthographyn.[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.()4. The method of spelling the words of a particular language; the system of symbols used for writing a language.()5. The branch of linguistics concerned with how languages are written.()