From Longman Dictionary of Contemporary EnglishSMESME /ˌes em ˈiː/ noun [countable] especially British English(small or medium enterprise) a company whose turnover and number of people working in it are lower than a particular amountFrom Longman Business DictionarySMESME noun [countable usually plural] British EnglishCOMMERCE small and medium (-sized) enterprise; fairly small companies that are usually based in one place and owned by one person or small group of peopleSMEs play an important role in sustaining domestic and regional economic growth. → see also small business