The Collaborative International Dictionary of English v.0.48:
Ascensive \As*cen"sive\, a. [See Ascend.] 1. Rising; tending to rise, or causing to rise. --Owen. [1913 Webster] 2. (Gram.) Augmentative; intensive. --Ellicott. [1913 Webster]WordNet (r) 3.0 (2006):
ascensive adj 1: tending or directed upward; "rooted and ascendant strength like that of foliage"- John Ruskin [syn: ascendant, ascendent, ascensive]