We have to defend critical national infrastructure.
The Sun (2011)
According to the report, it was the biggest loss of criticalinfrastructure since the Second World War.
Times, Sunday Times (2007)
Its systems guard criticalinfrastructure from the National Grid to the Thames barrier security system.
Times, Sunday Times (2011)
Definition of 'infrastructure'
infrastructure
(ɪnfrəstrʌktʃəʳ)Explore 'infrastructure' in the dictionary
variable noun
The infrastructure of a country, society, or organization consists of the basic facilities such as transport, communications, power supplies, and buildings, which enable it to function.