infrastructure

infrastructure — noun

1. the network of physical structures and facilities — roads, bridges, pipes, cable

1.nounB2
Definition

the network of physical structures and facilities — roads, bridges, pipes, cables, power grids, and similar systems — that a region or organization depends on to function properly

Example

Adina said the city's infrastructure — especially the water pipes — needs urgent repairs.

collocation: city's infrastructure — basic public facilities of an urban area

The government plans to spend more on infrastructure like roads and high-speed internet.

verb + noun: spend more on infrastructure

Common collocations
  • build / develop / improve infrastructure
  • infrastructure project / investment / spending
  • road / transport / water infrastructure
  • physical / public infrastructure
Synonyms
  • public works

    narrower — mainly government-built projects like roads and dams; less common in everyday language

  • utilities

    narrower — refers specifically to water, gas, electricity, and telecom services, not the physical networks themselves

  • facilities

    refers to individual buildings or installations rather than the system connecting them

Usage Note

Typically uncountable: 'more infrastructure is needed,' not 'more infrastructures are needed.' In formal planning documents, however, a countable use ('infrastructures') occasionally appears when referring to multiple distinct systems across different regions.

Common Mistakes

The city needs to build more infrastructures.
The city needs to build more infrastructure.
infrastructure is almost always uncountable.
This bridge is an infrastructure.
This bridge is part of the city's infrastructure.
a single structure is a facility; infrastructure refers to the whole interconnected system.

2. the basic systems, processes, or structures that support the operation of an org

2.nounC1
Definition

the basic systems, processes, or structures that support the operation of an organization, industry, or field of activity

Example

Ritu explained that the company's IT infrastructure was too old to support remote work.

modifier noun: IT infrastructure — technology systems of an organization

Without a solid legal infrastructure, the new online marketplace struggled to resolve disputes fairly.

modifier noun: legal infrastructure — abstract systems of rules and procedures

Common collocations
  • IT / digital / technical infrastructure
  • administrative / legal / financial infrastructure
  • organizational infrastructure
  • upgrade / overhaul / strengthen infrastructure
Synonyms
  • framework

    more abstract — refers to a set of principles or rules rather than actual systems and processes

  • foundation

    emphasises the base on which everything rests; less specific about the operational systems above it

  • backbone

    metaphorical — highlights the most critical part of a system, but less formal and narrower in scope

Usage Note

Very common in business, technology, and policy contexts. Frequently preceded by a describing noun: 'IT infrastructure,' 'digital infrastructure,' 'social infrastructure,' 'legal infrastructure.' The meaning ranges from purely technical (servers, networks) to purely procedural (rules, workflows, hierarchies).

Common Mistakes

We need to fix our company's infrastructure' (when meaning a single broken computer).
We need to fix our company's IT infrastructure' (or 'We need to replace this computer.')
specify what kind of infrastructure you mean; the word alone implies a large-scale system.

Word family

  • infrastructural
    adjectiveC1
  • infrastructurally
    adverbC2

Synonym discussion

Sense: noun/1

Infrastructure refers to the entire interconnected system of physical structures (roads, pipes, cables, power grids) that a region needs. Facilities are individual buildings or installations — a school, a hospital, a library — rather than the connecting network. Utilities cover the services delivered through infrastructure (water, electricity, gas) but not the physical pipes and wires themselves. Public works is the narrowest term, used mainly in government contexts for taxpayer-funded construction projects like dams and highways. For example: 'The city's infrastructure includes water pipes and treatment plants (infrastructure), but each pumping station is a separate facility (facility). The utility company (utility) charges residents for the water flowing through those pipes.'

infrastructure ↗facilitiesutilitiespublic works

Common collocations

Nouns

  • transport infrastructure
  • IT infrastructure
  • road infrastructure
  • digital infrastructure
  • physical infrastructure
  • energy infrastructure

Phrases

  • build infrastructure
  • invest in infrastructure
  • upgrade infrastructure
  • improve infrastructure
  • develop infrastructure
  • infrastructure project
  • infrastructure spending

Prepositions

  • infrastructure of
  • infrastructure for

Etymology

LatinFrenchEnglish

Infrastructure came into English from French in the early 20th century. The French word infra- means 'below, beneath' (from Latin) and structure comes from Latin structura, meaning 'a building, arrangement.' So infrastructure literally means 'the structure beneath.' It was first used in military engineering for the fixed installations (roads, bridges, bunkers) that support military operations. By the 1950s, its meaning broadened to civil and public works — the road networks, power grids, and water systems modern society depends on. The abstract sense (organizational infrastructure) developed later in business and technology contexts.