LIFE IN BEING

life in being.Under the rule against perpetuities, anyone alive when a future interest is created, whether or not the person has an interest in the estate. See IN BEING; RULE AGAINST PERPETUITIES. Cf. MEASURING LIFE. [Cases: Perpetuities  4(1). C.J.S. Perpetuities §§ 2, 12, 15–18, 20–24, 27–28, 30, 33, 35–36, 52–53.]
[Blacks Law 8th]