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
Cork crumbles are also used as infill for sports fields and inserted into concrete on airport runways to help absorb the shock of plane landings.
—Dee-Ann Durbin, Fortune, 5 Sep. 2025
The company is focused on owning, operating and acquiring industrial properties in Southern California infill markets.
—Kenneth Squire, CNBC, 30 Aug. 2025
In these infill locations, multifamily does comprise a larger share of net new residential housing than single family.
—Dana Taylor, USA Today, 22 Aug. 2025
The reforms carve out broad exemptions from CEQA for qualifying infill housing projects up to 85 feet tall or under 20 acres, particularly those near transit.
—U T Editorial Board, San Diego Union-Tribune, 22 Aug. 2025
See All Example Sentences for infill
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Dee-Ann Durbin, Fortune, 5 Sep. 2025
The company is focused on owning, operating and acquiring industrial properties in Southern California infill markets.
—Kenneth Squire, CNBC, 30 Aug. 2025
In these infill locations, multifamily does comprise a larger share of net new residential housing than single family.
—Dana Taylor, USA Today, 22 Aug. 2025
The reforms carve out broad exemptions from CEQA for qualifying infill housing projects up to 85 feet tall or under 20 acres, particularly those near transit.
—U T Editorial Board, San Diego Union-Tribune, 22 Aug. 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 30 Oct. 2025.
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