where does the word o.k. come from
OK The general fad is speculated to have existed in spoken or informal written U.S. English for a decade or more before its appearance in newspapers. OK's original presentation as "all correct" was later varied with spellings such as "Oll Korrect" or even "Ole Kurreck".
Medical terminology When more than one body part is used in the formation of a medical term, the individual word roots are joined together by using the combining form using the letter -o- to indicate the joining together of various body parts. For example if there is an inflammation of the stomach and intestines, this would be written as gastro- and enter- plus -itis, gastroenteritis. In this example, the -o- signifies the joining together of two body parts.