uhat does Eternity mean?

it means forever and ever.

here's one meaning for you: eternity often simply means existing for an infinite, i.e., limitless, amount of time, many have used it to refer to a timeless existence altogether outside of time. There are a number of arguments for eternity, by which proponents of the concept, principally Aristotle, purported to prove that matter, motion, and time must have existed eternally. for more of it visit http://www.wikipedia.com greetings. : )

after the world ends eternity continues

a very long or seemingly very long period of time sentence:It will take an eternity to put it together again.