developmental

from WordNet (r) 3.0 (2006)

developmental
    adj 1: of or relating to or constituting development;
           "developmental psychology"

from The Collaborative International Dictionary of English v.0.48

Developmental \De*vel`op*men"tal\, a.
   Pertaining to, or characteristic of, the process of
   development; as, the developmental power of a germ.
   --Carpenter.
   [1913 Webster]