1. Noun, Suru verb, Intransitive verb

   1.

   development; growth; expansion; extension

2. 2.

   development (of a situation, story, etc.); advancement; progression; unfolding

3. 3.

   playing around (sexually; esp. of a male homosexual); having an active sex life

Example sentences

• ボストンはここ１０年間で急速に発展した。

  Boston has grown rapidly in the last ten years.

• 発展途上国では優れた技術者が不足している。

  Good technicians are in short supply in the developing countries.