in·​fill | \ˈin-ˌfil \

Definition of infill 

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 It'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

2 : 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 noun St. 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. Porterinfill housing

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Other Words from infill

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 Stump holes can be expected to infill with material from the pit walls and immediate vicinity … — Jonathan D. Phillips et al.

Examples of infill in a Sentence

Recent Examples on the Web

Both of those paths would extend under the Lake Shore Drive bridge to the 3.3-acre parcel of infill near the river’s mouth that long has been planned as DuSable Park. Bill Ruthhart,, "Exclusive: Two soaring towers planned for long-languishing Chicago Spire site along Lake Shore Drive," 11 May 2018 The City Council on May 21 voted 5-1 against amendments to the city’s zoning ordinance concerning the infill of Murphy Lake, a manmade lake surrounded by 33 residential properties. Jennifer Johnson,, "Park Ridge aldermen reject restrictions on Murphy Lake infill," 29 May 2018 At 112 homes, the two projects together will not be nearly as large as other major infill housing in central Sacramento communities. Tony Bizjak, sacbee, "Remember the old state fairgrounds? It’s Sacramento’s newest urban housing hot spot," 12 July 2018 This would apply exclusively to the existing two-family zoning district in the north and south Moreland neighborhoods that will allow for more creative and diverse infill housing on small vacant lots. Thomas Jewell,, "Shaker, county to split cost on repaving Fairhill Road: Council recap," 25 Apr. 2018 Fishback’s defense hinges on the idea that the infill is improving his property to allow future development. Louis Sahagun,, "To build his 'big, beautiful park,' this landowner is filling a canyon with debris. Critics say he built a dump," 31 May 2018 Leyla Jaworski of Design Shop Interiors recently put a baby crib in one room in a model home at The Grounds, an infill development by Reynen & Bardis near the UC Davis Medical Center campus in Sacramento. Tony Bizjak, sacbee, "Millennials are finally ready to buy homes. Here's what they want in the Sacramento region | The Sacramento Bee," 14 May 2018 The mansion won an award from the Lake Forest Preservation Foundation in 2007 for new-construction infill development. Bob Goldsborough,, "Nancy Hughes, John Hughes' widow, lists Lake Forest mansion for $4.49 million," 20 Feb. 2018 And every infill home is one that goes unbuilt on the edges, preserving rural and open spaces and prevent sprawl. Adam Rogers, WIRED, "Big Tech Isn’t the Problem With Homelessness. It’s All of Us," 21 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'infill.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of infill

1939, in the meaning defined at sense 1

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Last Updated

11 Nov 2018

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Time Traveler for infill

The first known use of infill was in 1939

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Comments on infill

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to express warning or disapproval

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