Definitions

1. adjective

lasting or existing forever; endless

“The aeviternal nature of the universe has fascinated scientists for centuries.”

2. noun

a being or entity that has an aeviternal existence

“In mythology, the phoenix is often described as aeviternal.”

3. adverb

in a way that is aeviternal or endless

“She sang aeviternally, her voice echoing through the empty halls.”