Black's Law Dictionary (2nd edition)dictionaries

Perpetuity

A future limitation, whether executory or by way of remainder, and of either real or personal property, which is not to vest until after the expiration of or will not necessarily vest wlthln the period fixed and prescribed by law for the creation of future estates and interests, and which is not destructible by the persons for the time being entitled to the property subject to the future limitation, except with the concur-rence of the individual interested under that limitation. Lewis, Perp. 164; 52 Law Llb. 139

Source: Black's Law Dictionary 2nd Ed (1910)