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1 : the quality, state, or duration of being perpetual [devised to them in ]
2 a : the condition of a future estate limited in such a way as not to vest within the period fixed by law for the vesting of an estate
: a limitation that gives rise to such a situation
b : an estate that will not vest within the period fixed by law see also rule against perpetuities, statutory rule against perpetuities
3 : an annuity payable forever
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.