1.The act of developing or disclosing that which is unknown; a gradual unfolding process by which anything is developed, as a plan or method, or an image upon a photographic plate; gradual advancement or growth through a series of progressive changes; also, the result of developing, or a developed state. "A new development of imagination, taste, and poetry."
2.(Biol.) The series of changes which animal and vegetable organisms undergo in their passage from the embryonic state to maturity, from a lower to a higher state of organization.
4.(Mus.) The elaboration of a theme or subject; the unfolding of a musical idea; the evolution of a whole piece or movement from a leading theme or motive.
5.A tract of land on which a number of buildings have been constructed; especially used for tract on which from two to hundreds of houses have been constructed by a commercial developer (4) for sale to individuals.
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