A more thorough explanation:

Term: PER AEQUIPOLLENS

Definition: Per aequipollens means "by an equivalent" in Latin. It refers to something that is equal or equivalent to something else.

Example: In medieval times, bartering was a common practice. If someone wanted to trade a cow for a horse, they would have to make sure that the value of the cow was per aequipollens to the value of the horse. This means that the cow and the horse were of equal value, so the trade would be fair.

Explanation: The example illustrates the definition of per aequipollens because the cow and the horse had to be of equal value for the trade to be fair. If one animal was worth more than the other, then the trade would not be per aequipollens. This term is still used today in legal and financial contexts to refer to things that are of equal value or have equivalent worth.