Definitions of nova:

• noun:   a star that ejects some of its material in the form of a cloud and become more luminous in the process
• name:  A female given name (rare: 1 in 25000 females; popularity rank in the U.S.: #1600)
• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #15391)