upgradation
nounBrE BrE//ˌʌpɡreɪˈdeɪʃn//; NAmE NAmE//ˌʌpɡreɪˈdeɪʃn//; BrE BrE//ˌʌpɡrəˈdeɪʃn//; NAmE NAmE//ˌʌpɡrəˈdeɪʃn//
[uncountable] (Indian English)Check pronunciation: upgradation
Definition of upgradation noun from the Oxford Advanced Learner's Dictionary