From Longman Dictionary of Contemporary Englishmagna cum laudemag‧na cum lau‧de /ˌmæɡnə kʊm ˈlaʊdeɪ, -kʌm ˈlɔːdi $ -kʊm ˈlaʊdi/ adjective, adverb SECwith high honour – used to show that someone has finished American high school or college at the second of the three highest levels of achievement that students can reach → cum laude, summa cum laudeOrigin magna cum laude (1900-2000) Latin “with great praise”