developing

1. To change with a specific direction, progress.

   Let's see how things develop and then make our decision.

2. To progress through a sequence of stages.

   Isabel developed from a tropical depression to a tropical storm to a hurricane.   An embryo develops into a fetus and then into an infant.

3. To advance; to further; to promote the growth of.
4. To create.

   I need to develop a plan for the next three weeks.

5. To bring out images latent in photographic film.

   Please develop this roll of film.

6. To acquire something usually over a period of time.

   I have been in England enough to develop a British accent.

7. To place one's pieces actively.

   I need to develop my white-square bishop.

8. To cause a ball to become more open and available to be played on later. Usually by moving it away from the cushion, or by opening a pack.
9. To change the form of (an algebraic expression, etc.) by executing certain indicated operations without changing the value.

noun

A process of development.

1. In the process of development.

   a developing foetus

2. Of a country: becoming economically more mature or advanced; becoming industrialized.