A process in which something passes by degrees to a different stage (especially a more advanced or mature stage)
(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.
The act of making some area of land or water more profitable or productive or useful.
Processing a photosensitive material in order to make an image visible.
An increase in economic and industrial activity.