'Developmental' definitions:

Definition of 'developmental'

(from WordNet)
adjective
Of or relating to or constituting development; "developmental psychology"

Definition of 'Developmental'

From: GCIDE
  • 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]