eternity

noun
1
time without end, especially life continuing without end after death
ابدیت, جاودانگی, بی‌پایانی, زندگی ابدی
2
a period of time that seems to be very long or to never end
ابدیّت, جاودانگی, همیشگی, سرمدیت
After what seemed like an eternity the nurse returned with the results of the test.