Beings or things that exist forever without beginning or end, or the plural of eternal used as a noun.
From eternal (from Latin aeternalis, meaning 'lasting forever') plus -s plural suffix. The suffix -al converts Latin aeternus into an adjective, which can be nominalized to refer to eternal beings.
Marvel Comics popularized 'Eternals' as a superhero team, but the concept of eternal beings appears across cultures—from Greek gods to Hindu devas—suggesting humanity has always wondered about immortal entities beyond our mortal experience.
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