Other forms: saviors
A savior is somebody who saves you. Say you're hanging by your fingernails from the ledge of a burning building. When the firefighter appears to carry you to safety, it would be appropriate to cry, "My savior has arrived!"
If you rescue the rarely seen white-fanged mudslide chameleon from extinction, wildlife enthusiasts would no doubt call you the creature's savior. Savior, with a capital S, is one of the names Christians use for Jesus, Savior of the World, Lord and Savior, the one who saves souls. As you've no doubt noticed, the word savior is connected to the word save, — both words come from the Latin salvare, which means simply "to save."