noun, plural per·pe·tu·i·ties.
- the state or character of being perpetual (often preceded by in): to desire happiness in perpetuity.
- endless or indefinitely long duration or existence; eternity.
- something that is perpetual.
- an annuity paid for life.
- Law. an interest under which property is less than completely alienable for longer than the law allows.
noun plural -ties
- the state or quality of being perpetual
- property law a limitation preventing the absolute disposal of an estate for longer than the period allowed by law
- an annuity with no maturity date and payable indefinitely
- in perpetuity for ever
late 14c., from Old French perpetuité “permanence, duration” (13c., Modern French perpétuité) and directly from Latin perpetuitatem (nominative perpetuitas) “uninterrupted duration, continuity, continuous succession,” from perpetuus (see perpetual).
For all time, forever, as in This land was given to the state in perpetuity. [First half of 1400s]