INVALIDATE Meaning of INVALIDATE in English invali|date BrE AmE ɪn ˈvæl ɪ |deɪt ˌɪn-, -ə- ▷ invali|dated deɪt ɪd -əd AmE deɪt̬ əd▷ invali|dates deɪts▷ invali|dating deɪt ɪŋ AmE deɪt̬ ɪŋ Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012