in ‧ fra ‧ struc ‧ ture AC /ˈɪnfrəˌstrʌktʃə $ -ər/ BrE AmE noun [uncountable and countable]
[ Word Family: noun : ↑ infrastructure ; adjective : ↑ infrastructural ]
the basic systems and structures that a country or organization needs in order to work properly, for example roads, railways, banks etc:
Some countries lack a suitable economic infrastructure.
a $65 billion investment package in education, health care and infrastructure
—infrastructural adjective