infrastructure

American  

[in-fruh-struhk-cher] / ˈɪn frəˌstrʌk tʃər /

noun

1. the fundamental facilities and systems serving a country, city, or area, as transportation and communication systems, power plants, and schools.

   Investments in infrastructure helped the U.S. economy recover from the Great Depression.

2. the basic, underlying framework or features of a system or organization.

   Over the years, as the incidence of cancer increased, the infrastructure of the hospital was developed to accommodate the new cases.

   Synonyms:

   support, foundation, basis

3. the military installations of a country.

   We could do much with just a fraction of the billions spent to maintain our robust overseas infrastructure.

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infrastructure British  

/ ˈɪnfrəˌstrʌktʃə /

noun

1. the basic structure of an organization, system, etc

2. the stock of fixed capital equipment in a country, including factories, roads, schools, etc, considered as a determinant of economic growth

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Other Word Forms

• infrastructural adjective

Etymology

Origin of infrastructure

First recorded in 1925–30; infra + structure

Explanation

The infrastructure is the basic foundation or underlying framework of an organization or system. In your house, the infrastructure is the system of beams, weight-bearing walls and the foundation that keeps it standing. Infrastructure often refers to the equipment and structures required by the military or by a country or region. Roads, bridges, and school buildings are part of our nation's infrastructure, and are necessary for the continued growth of our communities. This word was formed as a compound in English, using the prefix infra- "below, underneath."

Example Sentences

“While manufacturers have become more optimistic on infrastructure and defense investment promises, the Middle East war has dashed hopes of a broad-based rebound,” he said.

From The Wall Street Journal • Apr. 15, 2026

They are future-proofing the club in all aspects, from the infrastructure to the number of people employed by the club.

From BBC • Apr. 15, 2026

Bloom Energy surged 21% on the heels of a deal announcement with Oracle to support the buildout of the cloud provider’s artificial-intelligence infrastructure.

From Barron's • Apr. 14, 2026

That’s because of the company’s ability to directly monetize the AI boom given ample demand for its Azure cloud infrastructure.

From MarketWatch • Apr. 14, 2026

Finally I finished and said, “Can I be excused?” and they hardly even paused from their conversation about the strengths and weaknesses of Guinean infrastructure.

From "The Fault in Our Stars" by John Green

Related Words

• base
• framework