ˈlearning curve BrE AmE noun [countable]
the rate at which you learn a new skill:
Everyone in the centre has been through a very steep learning curve (=they had to learn very quickly) .
ˈlearning curve BrE AmE noun [countable]
the rate at which you learn a new skill:
Everyone in the centre has been through a very steep learning curve (=they had to learn very quickly) .
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012