Plural of eternity; infinite or indefinitely long periods of time, or the state of lasting forever.
From eternity (Latin aeternitas) plus -ies plural suffix. Eternity itself comes from aeternus meaning 'eternal' or 'lasting forever' in Latin.
Physicists debate whether time itself is eternal—did the Big Bang create time, or did time always exist?—and this ancient word 'eternities' captures humanity's wondering about the deepest nature of reality.
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