LUMINOSITY Meaning of LUMINOSITY in English luminosit|y BrE AmE ˌluːm ɪ ˈnɒs ət |i ˌljuːm-, ˌ•ə-, -ɪt i AmE \ -ˈnɑːs ət̬ |i▷ luminosit|ies iz Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012