abbreviationEnglishOxford New American Dictionaryabbreviation /əˌbrēvēˈāSH(ə)n, əˌbriviˈeɪʃ(ə)n / ▸ noun a shortened form of a word or phrase: SKU is the abbreviation for Stock Keeping Unit. ▪ the process of abbreviating something: nursing records must be written without abbreviation.