Developmental

(a.) Pertaining to, or characteristic of, the process of development; as, the developmental power of a germ.

Thesaurus Entries

amplifying, crescendoing, crescent, developmental, dilatative, dilative, enlarging, expatiating, growing, increasing, incremental, intensifying, lengthening, multiplying, on the increase, proliferating, snowballing, spreading, swelling, tightening, waxing