I can only use the definitions in the dictionary, in the Wikipedia, and the UN. I'm not going to go with your off-the-cuff rejection of the dictionary.
You probably know more latin than you realize. Ad lib, Alias, Alibi ,Alma mater ,Alter ego, Ante meridiam/Post meridiam, Bona fide ,Carpe diem, Caveat, Consensus, Ergo, Et cetera, In memoriam, Magnum opus, Per capita, Per se, Pro bono, Status quo, Veni vidi vici, Verbatim, and Vice versa are latin words that are still commonly used across all languages.