"I think you mean 'Novus Mundus.' in any case, it simply means the New World."
I'm guessing the asker meant what s/he wrote: "Mundus Novus." (Not all languages follow the rules of English syntax.) It is commonly written that way. It is also the title of what is purported to be a Latin translation of one of Amerigo Vespucci's (now lost) travel reports. Its authenticity is questionable.
Forgive the snarkiness of the first sentence of my response to the response to the question.
The Latin word for New World is "Mundus Novus"
Joachim Klowski has written: 'Mundus Novus. Lateinische Texte zur Eroberung Amerikas.'
Frank Mundus's birth name is Frank Louis Mundus.
Mundus Intellectualis was created in 1994.
Dactylagnus mundus was created in 1863.
Stygobromus mundus was created in 1967.
Angelus Novus was created in 1920.
Novus International was created in 1991.
Novus Biologicals was created in 1996.
Novus Entertainment was created in 1996.
Novus Magnificat was created in 1986.
New.