A more thorough explanation:

Definition: Natis et nascituris (nay-tis et nas-i-t[y]uur-is) is a Latin term used in history to refer to children who have been born and those who are yet to be born. It was commonly used to convey an inheritance.

Example: A wealthy man writes in his will that his estate should be divided equally among his children, both natis (those who have been born) and nascituris (those who are yet to be born).

Explanation: In this example, the term natis et nascituris is used to ensure that all of the man's children, whether they have been born or not, receive an equal share of his estate. This was a common practice in the past to ensure that future generations were taken care of and that the family's wealth was preserved.