Per-fĕct'ive, a.

a. [Sp. perfectivo, It. perfettivo.] 1. Calculated or tending to perfect; conducing to make perfect or bring to perfection; — usually followed by of. “If England, in our memory, hath been sensible of a perfective alteration in her churches.” Fuller. Praise and adoration are actions perfective of the soul. More. 2. (Gram.) Expressing completed or momentary action; — said of some forms of the verb.