(cosmology, religion, philosophy) Eternal recurrence.

(cosmology, religion, philosophy) The belief or theory that all the events in cosmic history repeat in an endless cycle.

Immortality. / (religion) Life after death; the afterlife.

A nickname for the city of Rome. / A nickname for the city of Kyoto in Japan.

(idiomatic) A relationship involving three persons (usually two women and one man or two men and one woman) among whom there are conflicting and competing attachments of a romantic or emotional nature.

(mythology, fiction, fantasy) A magical state of suspended animation, a state of ageless, deathless, everlasting sleep. Well-known examples are Endymion, (the lover of the Greek moon goddess, Selene), and the princess from Sleeping Beauty.

A lady's ring, worn on the hand, comprising a band of precious metal (usually gold) set with a continuous line of identically cut gemstones (usually diamonds) to symbolize never-ending love, usually given by a husband to his wife on a significant anniversary.

plural of eternity ring

plural of eternal sin

(Christianity) The sin which is unpardonable by God and therefore make salvation impossible.