Modus operandi (often used in the abbreviated forms M.O. or simply Method) is a Latin phrase, approximately translated as 'method of operating' The term is used in English to describe someone's habits or manner of working, the method of operating or functioning. . Get a M-O mug for . Missouri is a state in the Midwestern United States. With over six million residents, it is the 18th-most populous state of the Union. The largest urban areas are . A modus operandi (often shortened to M.O.) is someone's habits of working, particularly in the context of business or criminal investigations, but also more . View the basic MO stock chart on Yahoo Finance. Change the date range, chart type and compare Altria Group, Inc. against other companies. From Middle English mo, from Old English mā, from Proto-Germanic *maiz, from a comparative form of Proto-Indo-European *mə-. Cognate with Swedish mer, . Modus operandi definition, mode of operating or working. See more. Real-time trade and investing ideas on Altria Group Inc. MO from the largest community of traders and investors. Latest Breaking news and Headlines on Altria Group, Inc. (MO) stock from Seeking Alpha. Read the news as it happens!