1. A reference to the placement or order of time for completing something before anything else is accomplished: When the lawyer wrote Mark's will, she indicated imprimis that all outstanding bills be paid before any other disbursement of funds.
2. Etymology: a contraction of the Latin phrase in primis, "among the first"; from in, "among" and primus, "first".

Imprimis was originally used to introduce the first of a number of articles in a list; such as, a will, an inventory, etc.