The term 'LEAN' is an acronym for 'Leadership, Efficiency, Accountability, and Navigation'. It is a business management system that focuses on improving efficiency and reducing waste. It was developed by Toyota in the 1990s and has since been adopted by many other companies. The goal of LEAN is to create a more efficient and productive workplace by eliminating unnecessary steps and processes. LEAN also emphasizes the importance of leadership and accountability in order to ensure that the system is successful.