the act or an instance of developing or being developed
the result of this, e.g. an innovation or new product
something which changes a situation
There's been a new development and the strike has been called off
an area of new building
There's going to be a major housing development here
in music, the treatment of previously heard themes and phrases, esp the central section of a musical movement written in sonata form
developmental /-ʹmentl/ adj
developmentally /-ʹmentəli/ adv