Deva (Hinduism)
Deva (Sanskrit: देव, Devá) means "heavenly, divine, anything of excellence", and is also one of the terms for a deity in Hinduism. Deva is masculine, and the related feminine equivalent is devi (pronounced Devee).
In the earliest Vedic literature, all supernatural beings are called Asuras. The concepts and legends evolve in ancient Indian literature, and by the late Vedic period, benevolent supernatural beings are referred to as Deva-Asuras. In post-Vedic texts, such as the Puranas and the Itihasas of Hinduism, the Devas represent the good, and the Asuras the bad. In some medieval Indian literature, Devas are also referred to as Suras and contrasted with their equally powerful but malevolent half-brothers, referred to as the Asuras.
Devas along with Asuras, Yakshas (nature spirits) and Rakshasas (ghosts, ogres) are part of Indian mythology, and Devas feature in one of many cosmological theories in Hinduism.
Deva is a Sanskrit word found in Vedic literature of 2nd millennium BCE. Monier Williams translates it as "heavenly, divine, terrestrial things of high excellence, exalted, shining ones". The concept also is used to refer to deity or god.
The Sanskrit deva- derives from Indo-Iranian *dev- which in turn descends from the Proto-Indo-European word, *deiwos, originally an adjective meaning "celestial" or "shining", which is a (not synchronic Sanskrit) vrddhi derivative from the root *diw meaning "to shine", especially as the day-lit sky. The feminine form of *deiwos is *deiwih2, which descends into Indic languages as devi, in that context meaning "female deity". Also deriving from *deiwos, and thus cognates of deva, are Lithuanian Dievas (Latvian Dievs, Prussian Deiwas), Germanic Tiwaz (seen in English "Tuesday") and the related Old Norse Tivar (gods), and Latin deus "god" and divus "divine", from which the English words "divine", "deity", French "dieu", Portuguese "deus", Spanish "dios" and Italian "dio", also "Zeys/Ζεύς" - "Dias/Δίας", the Greek father of the gods, are derived. It is related to *Dyeus which while from the same root, may originally have referred to the "heavenly shining father", and hence to "Father Sky", the chief God of the Indo-European pantheon, continued in Sanskrit Dyaus. The bode of the Devas is Dyuloka.
...
Wikipedia