The Younger Edda; Also called Snorre's Edda, or The Prose...

Ragnarok. The word is found written in two ways, Ragnarok and ragnarökr. Ragna is genitive plural, from the word regin (god), and means of the gods. Rok means reason, ground, origin, a wonder, sign, marvel. It is allied to the O.H.G. rahha = sentence, judgment. Ragnarök would then mean the history of the gods, and applied to the dissolution of the world, might be translated the last judgment, doomsday, weird of gods and the world. Rokr means twilight, and Ragnarokr, as the Younger Edda has it, thus means the twilight of the gods, and the latter is adopted by nearly all modern writers, although Gudbr. Vigfusson declares that Ragnarok (doomsday) is no doubt the correct form. And this is also to be said in favor of doomsday, that Ragnarok does not involve only the twilight, but the whole night of the gods and the world.