act of improving by expanding or enlarging or refining

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

a recent event that has some relevance for the present situation

the act of making some area of land or water more profitable or productive or useful

a district that has been developed to serve some purpose

a state in which things are improving; the result of developing (as in the early part of a game of chess)

processing a photosensitive material in order to make an image visible

(music) the section of a composition or movement (especially in sonata form) where the major musical themes are developed and elaborated