1. the process or material used to fill in a gap, space, or cavity
Usage: commonly used in construction and urban development
2. the development of vacant or underused land within an existing urban area
Usage: urban planning and real estate term

1. to fill in or complete a gap, space, or area

Examples

• The infilling of the old quarry took several months to complete.
• Urban infilling helps reduce sprawl and makes better use of existing infrastructure.
• The contractor used concrete for the infilling of the foundation cracks.
• The city is infilling vacant lots with new affordable housing.
• Infilling between the wall studs improves insulation and soundproofing.
• The developer proposed infilling the abandoned industrial site with mixed-use buildings.