Search Result for "phase in":
Wordnet 3.0

VERB (1)

1. introduce gradually; 



The Collaborative International Dictionary of English v.0.48:

Phase in \Phase" in`\ (f[=a]z" [i^]n`), v. t.
   To begin an activity or to incorporate new elements or
   replace older elements of an activity in steps, or by
   degrees.
   [PJC]


WordNet (r) 3.0 (2006):

phase in
    v 1: introduce gradually [ant: phase out]