A more thorough explanation:

Definition: Jus futurum (pronounced "jus fyoo-t[y]oor-uhm") is a Latin term used in civil law to refer to a right that has not yet fully vested. It is an inchoate or expectant right.

Example: An example of jus futurum is when a person is named as a beneficiary in a will, but the person who made the will is still alive. The beneficiary has an expectant right to the inheritance, but it has not yet fully vested because the person who made the will could change it at any time.

Another example of jus futurum is when a person is promised a promotion at work, but the promotion has not yet been officially announced or given. The person has an inchoate right to the promotion, but it has not yet fully vested because it has not been officially granted.

These examples illustrate the concept of jus futurum because in both cases, the right is not yet fully vested. The beneficiary and the employee both have an expectation of receiving something, but it is not yet guaranteed. The right could still be taken away or changed before it becomes fully vested.