Double Possibility
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
A possibility based or dependent on another possibility. Used ordinarily in respect to the creation of contingent trusts and remainders. Thus, a bequest to testator's unborn "child" is valid, resting on a single possibility; while one to his unborn "son" is invalid, the possibility being double.