Eighth Edition (1990: The Concise O. Dictionary of Current English, Being computer-based, this edition changed the original structure to a large extent.
Concise O. English Dictionary (until 2002 officially titled The Concise O. Dictionary, and widely known by the abbreviation COD) is probably the best-known of the 'smaller' O. dictionaries. It was started as a derivative of the O. English Dictionary (OED), although section S–Z had to be written before the O. English Dictionary reached that stage.