the philosophy, values, behavior, dress codes, etc., that together constitute the unique style and policies of a company.
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British Dictionary definitions for corporate culture
the distinctive ethos of an organization that influences the level of formality, loyalty, and general behaviour of its employees
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012