Highly-skilled emigration

Wikipedia Word definitions in Wikipedia
Brain Drain may refer to: Brain drain , an emigration term Brain Drain (album) , a Ramones album Brain Drain (comics) , a Marvel Comics character "Brain Drain" (Charmed) , an episode of the television series Charmed Brain Drain (film) , 2009 Spanish comedy ...

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ He could not argue, looking at Imperial, that there has been a major brain drain of senior staff.

WordNet Word definitions in WordNet
n. depletion or loss of intellectual and technical personnel

Wiktionary Word definitions in Wiktionary
n. The migration of educated or talented people from less economically advanced areas to more economically advanced areas, especially to large cities or richer countries.