1
: material that fills in something (such as a hole or the spaces between a building's structural members)
volcanic infill
fiberglass infill
The artificial turf being used contains infill that is made from recycled tires …—
Greg Fitzpatrick
Greg FitzpatrickIt's framed with hand-hewn cypress posts and beams, though instead of … brick infill … the walls are formed from … a mixture of mud, moss, and animal hair that was once used by native Americans living in the area.—Amy R. Hughes
Amy R. Hughes2
: new buildings constructed in the space available between existing structures
Urban infill, a big theme these days in city planning, is essentially the opposite of "urban sprawl." As cities grow, planners are looking for ways to pack more people into places that are already developed.—Franklyn Cater
—often used before another nounFranklyn CaterSt. Louis must be the infill capital of the nation. Liberally scattered over the city, especially in the older parts, you see clumps and blocks of new apartments, condominia and row houses tucked in among centenarian neighbors.—E. F. Porter
E. F. Porterinfill housing
infill
verb, transitive + intransitive
infilled; infilling
… it was easier to achieve the vaults themselves by building them of a framework of ribs infilled with webs.
—James F. O'Gorman
James F. O'Gorman
Stump holes can be expected to infill with material from the pit walls and immediate vicinity …
—Jonathan D. Phillips et al.
Jonathan D. Phillips et al.
Examples of infill in a Sentence
Recent Examples on the Web
The infill development project also encompasses the extension of Kickapoo Street, which will terminate in a cul-de-sac.
—Tammy Ljungblad, Kansas City Star, 10 June 2025
The area is often described as one of the country’s largest urban infill projects, and economic development leaders see it as a means of doubling the size of Sacramento’s downtown.
—Annika Merrilees, Sacbee.com, 5 June 2025
However, today there are alternative infill materials available, including organic options such as cork or walnut shells.
—Colleen Sullivan, Better Homes & Gardens, 14 Apr. 2025
The urban infill project next to a Walmart shopping center near Interstate 5 and state Route 78 is called Lagoon Pacific.
—Phil Diehl, San Diego Union-Tribune, 26 May 2025
See All Example Sentences for infill
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Tammy Ljungblad, Kansas City Star, 10 June 2025
The area is often described as one of the country’s largest urban infill projects, and economic development leaders see it as a means of doubling the size of Sacramento’s downtown.
—Annika Merrilees, Sacbee.com, 5 June 2025
However, today there are alternative infill materials available, including organic options such as cork or walnut shells.
—Colleen Sullivan, Better Homes & Gardens, 14 Apr. 2025
The urban infill project next to a Walmart shopping center near Interstate 5 and state Route 78 is called Lagoon Pacific.
—Phil Diehl, San Diego Union-Tribune, 26 May 2025
See All Example Sentences for infill
Cite this Entry
“Infill.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infill. Accessed 19 Jun. 2025.
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