Definition of infrastructure noun from the Oxford Advanced Learner's Dictionary

  

infrastructure

 noun
noun
BrE BrE//ˈɪnfrəstrʌktʃə(r)//
 
; NAmE NAmE//ˈɪnfrəstrʌktʃər//
 
[countable, uncountable]
 
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the basic systems and services that are necessary for a country or an organization to run smoothly, for example buildings, transport and water and power supplies Word Origin early 20th cent.: from French (see infra-, structure).
See the Oxford Advanced American Dictionary entry: infrastructure