infill
UK[ˈɪnfɪl]US[ˈɪnfɪl]
n
The material or substance used to fill a hole, gap, or cavity.
n
The process of constructing new buildings in the gaps between existing ones in a developed area.
v
To fill or block up (a hole, gap, or cavity).
Morpheme Breakdown
in
fill
in
in, into, on.
fill
to make full, to put something into to capacity.
Etymology
The word 'infill' is a transparent compound formed within Modern English from the native elements 'in' and 'fill'. The prefix 'in-' carries its core directional sense of "into," while the verb 'fill' retains its ancient meaning of making something full, derived from the Proto-Germanic fullijaną and ultimately the Proto-Indo-European root pelh₁- (to fill). The term's logic is perfectly literal, describing the action of putting material into a void. Its application expanded from general use to a specific urban planning term in the mid-20th century, describing the practice of "filling in" vacant plots within already built-up areas, thus extending the core concept from physical cavities to spatial gaps in a cityscape.
Analysis
Structure: in + fill
- in: A prefix of English origin, from Old English and ultimately Proto-Indo-European, meaning "in, into, on."
- fill: A root of English origin, from Old English fyllan, meaning "to make full, to put something into to capacity."
Examples
The builders used compacted sand as infill for the foundation trench.
The city's new policy encourages infill development to make better use of urban space.
We need to infill these cracks before applying the final coat of paint.