(1) The spelling of words according to standard usage. (2) The part of language study concerned with letters and spelling.
George Washington and Thomas Jefferson -- and at least one recent vice president -- were deficient in the skill of orthography.
Even as recently as the 19th century, the orthography of the English language was still unsettled. Not until primers like "McGuffey's Readers" and dictionaries like Noah Webster's came along did uniform spelling become established. Before that, there was much orthographic variation, even among the more educated. Many people, of course, still have problems with spelling. They can take heart from the words of Mark Twain, who once remarked, "I don't give a damn for a man that can spell a word only one way."