Zeus the nominative is ("Zeús"). It is inflected as follows: vocative: (""); accusative: (); genitive: (); dative: (). Diogenes Laertius quotes Pherecydes of Syros as spelling the name, . "Zeus" is the Greek continuation of *"," the name of the Proto-Indo-European god of the daytime sky, also called *' ("Sky Father"). The god is known under this name in the Rigveda (Vedic Sanskrit "Dyaus/Dyaus Pita"), Latin (compare "Jupiter", from "Iuppiter", deriving from the Proto-Indo-European vocative *'), deriving from the root *"dyeu"- ("to shine", and in its many derivatives, "sky, heaven, god"). Zeus is the only deity in the Olympic pantheon whose
Zeus summit of Mount Lykaion, before which stood two columns bearing gilded eagles and 'facing the sun-rise'. Further Cook sees only the tale of Zeus' sacred precinct at Mount Lykaion allowing no shadows referring to Zeus as 'god of light' (Lykaios). Although etymology indicates that Zeus was originally a sky god, many Greek cities honored a local Zeus who lived underground. Athenians and Sicilians honored Zeus Meilichios ("kindly" or "honeyed") while other cities had Zeus Chthonios ("earthy"), Zeus Katachthonios ("under-the-earth") and Zeus Plousios ("wealth-bringing"). These deities might be represented as snakes or in human form in visual art, or, for emphasis