Brain drain is defined as the migration of health personnel in search of the better standard of living and quality of life, higher salaries, access to advanced technology and more stable... What are the main reasons for brain drain in India? Lack Of Opportunity in Higher Education: One of the reasons for Indian students moving abroad can be the tough competition to get into premiere Indian universities. BRAIN DRAIN definition: 1. the situation in which large numbers of educated and very skilled people leave their own country…. Learn more. Brain drain is phenomena where highly skilled and educated individual leave their home country to another nations in search of better job opportunities, higher salaries, advanced research facilities, and improved quality of life.