From Longman Dictionary of Contemporary EnglishRelated topics: Trade, Computersbar codeΛbar code βββ noun [countable]π Image of bar code BBTTDa group of thin and thicklinesprinted on products you buy in a shop, that a computer can read. It containsinformation such as the price.Examples from the Corpusbar codeβ’ There is a bar codeplus thirteen digit number on the front of this copy of EverydayElectronics.β’ When a bar code is read, all that is fed into the computer system is the same number.β’ Next month some practicalbar codehardware and software will be described.β’ To read in such a small bar code successfully requires a very high degree of resolution.β’ Without this massive data base, all you read in from the bar code is a meaningless number.β’ The do-it-yourselfbar codeuser therefore has to write his or her own reader software.From Longman Business Dictionarybar codeΛbar code [countable]COMMERCEa series of lines printed on products sold in a shop that can be read by a machineconnected to a computer to give the price, keep a record of the sale etcThe scanner at the checkout recognises the bar code and charges the correct amount. βbar coding noun [uncountable]The use of bar coding has meant that restocking is done automatically. βcode