1. areas of low-lying land that have been reclaimed from the sea or other body of water and are protected by dikes

Examples

• The Netherlands is famous for its polders, which make up much of the country’s farmland.
• Dutch engineers built extensive polders to create more agricultural space.
• The polders were protected by a system of dikes and drainage canals.
• Many polders lie below sea level and require constant water management.
• Farmers grew crops on the fertile soil of the reclaimed polders.
• The polders transformed marshy wetlands into productive agricultural areas.