A more thorough explanation:

Melior means better or the better option. It comes from the Latin language. For example, if you have two things and one is better than the other, you can say that the better one is melior.

• John got a new job with a melior salary than his previous one.
• After trying different brands, Sarah found that this one was melior in taste.

These examples show how melior is used to describe something that is better than another option. In the first example, John's new job has a better salary than his previous one. In the second example, Sarah found that one brand of a product was better in taste than the others she tried.