Though you could likely get a dozen different definitions from a dozen different professionals, an excellent explanation of organizational culture can be found in a recent Achiever’s blog:
“Organizational culture is the collection of values, expectations, and practices that guide and inform the actions of all team members. Think of it as the collection of traits that make your company what it is. A great culture exemplifies positive traits that lead to improved performance, while a dysfunctional company culture brings out qualities that can hinder even the most successful organizations.”