The Collaborative International Dictionary of English v.0.48:

Basify \Ba"si*fy\, v. t. [Base + -fy.] (Chem.)
   To convert into a salifiable base.
   [1913 Webster]

WordNet (r) 3.0 (2006):

basify
    v 1: turn basic and less acidic; "the solution alkalized" [syn:
         alkalize, alkalise, alkalify, basify] [ant:
         acetify, acidify]