What does Selena mean in greek?

There isn't a direct, established meaning for "Selena" in Greek. While it *sounds* like it could be of Greek origin due to its similarity to other Greek words, it's actually a name of Roman origin, derived from the Greek word for "moon," σελήνη (Selene). So while it's connected to Greek, it's not a word directly *meaning* something in Greek itself. The name Selena *itself* means "moon" but is a Roman adaptation.