perfective

Of, or relative to, the perfective aspect.

Of, or relative to, a perfect tense.

Tending to make perfect, or to bring to perfection.

a perfective alteration

It is not likely that Eternal Life ſhall be a torpid and unactive ſtate, or that it ſhall conſiſt only in an uninterrupted and endleſs Act of Love; the other Faculties ſhall be employed as well as the Will, in Actions ſuitable to, and perfective of their Natures; […]

A perfective verb form.