Lucifer ( LEW-si-fər) is a Latin term that means "light-bringer". As a proper name, it was used to refer to the planet Venus as the morning star in the ancient Roman era. Interpretations of a similar term in the Hebrew Bible, translated in the King James Version as "Lucifer", led to a Christian tradition of applying the name to Satan or the Devil. Most modern scholarship regards these interpretations as questionable, and translate the term in the relevant Bible passage as "morning star" or "shining one" rather than as a proper name, "Lucifer"
As a name for the Devil, the more common meaning in English, "Lucifer" is the rendering of the Hebrew word הֵילֵל in Isaiah (Isaiah 14:12) given in the King James Version of the Bible. The translators of this version took the word from the Latin Vulgate, which translated הֵילֵל by the Latin word lucifer (uncapitalized), meaning "the morning star, the planet Venus", or, as an adjective, "light-bringing".As a name for the morning star, "Lucifer" is a proper name and is capitalized in English. In Greco-Roman civilization the morning star was often personified and considered a god or the title of a deity associated with the planet.