development

(uncountable) The process of developing; growth, directed change.
(uncountable) The process by which a mature multicellular organism or part of an organism is produced by the addition of new cells.
(countable) Something which has developed.
(countable) A project consisting of one or more commercial or residential buildings.
(uncountable) The building of such a project.
(uncountable) The application of new ideas to practical problems (cf. research).
(uncountable) The active placement of the pieces, or the process of achieving it.
(countable, uncountable) The process by in which previous material is transformed and restated.
(countable, uncountable) The second section of a piece of music in sonata form, in which the original theme is revisited in altered and varying form.
(countable, uncountable) The expression of a function in the form of a series.
(countable, uncountable) The processing of photographic film so as to bring out the images latent in it.