Perpetuity

1. Something that is perpetual.
2. A perpetual annuity.
3. The number of years' purchase to be given for an annuity to continue forever.
4. The number of years in which the simple interest of any sum becomes equal to the principal.
5. The quality or condition of an estate by which it becomes inalienable, either perpetually or for a very long period; also, the estate itself so modified or perpetuated.
6. Duration without limitations as to time.
7. The quality or state of being perpetual; as, the perpetuity of laws.
8. Endless time.