maturation

noun

1. 1

   (medicine) the formation of morbific matter in an abscess or a vesicle and the discharge of pus

2. 2

   (biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level

   he proposed an indicator of osseous development in children

3. 3

   coming to full development; becoming mature