British Standards Institution
From Longman Business DictionaryBritish Standards InstitutionˌBritish ˈStandards Instiˌtution abbreviation BSI nounCOMMERCEORGANIZATIONS a British organization that sets standards of quality in building, ENGINEERING, and products used in the home. Products that are recognized by the British Standards Institution have a special symbol on them to show that they are of good qualitya lock bearing the British Standards Institution ‘Kitemark’