1. the process of growing or changing into a more advanced, mature, or complete form
2. a new product, idea, or method that has been created or improved
3. an area of land where new buildings are being built or have been built

Examples

• The child’s language development progressed rapidly between ages two and four.
• Scientists announced a major development in cancer research.
• The new housing development will include 200 homes and a community center.
• There have been several interesting developments in the investigation.
• Economic development is a priority for the new government.
• The development of the internet changed how we communicate.
• Construction began on the commercial development last month.