1. situated, occurring, or operating beneath the surface of the earth or ground

1. beneath the surface of the earth or ground

Examples

• The belowground root system of the tree extends deep into the soil.
• Belowground storage facilities protect supplies from weather and damage.
• Many insects live belowground in the soil.
• The city built a belowground parking garage beneath the plaza.
• Plant roots absorb water and nutrients belowground.
• Belowground coal mines require extensive safety equipment.