B.S.
From Longman Dictionary of Contemporary EnglishB.S.B.S. /ˌbiː ˈes/ noun American English 1 [countable] (Bachelor of Science) a first university degree in a science subject SYN BSc British English → B.A.B.S. in a B.S. in Biology2 [uncountable] not polite the abbreviation of bullshitFrom Longman Business DictionaryBSBS abbreviation for BRITISH STANDARD