Meaning

• To change with a specific direction, progress.

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

• 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."

• To advance; to further; to promote the growth of.

• To create.

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

• To bring out images latent in photographic film.

  "Please develop this roll of film."

• To acquire something usually over a period of time.

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

• To place one's pieces actively.

  "I need to develop my white-square bishop."

• 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.

• To change the form of (an algebraic expression, etc.) by executing certain indicated operations without changing the value.

Meaning

• (said of a country) Not primitive; not third-world.

• Mature.

• Containing man-made structures such as roads, sewers, electric lines, buildings, and so on.

• Having useful or necessary infrastructure.

• Advanced, fully formed.