ˈinfrə+ˌ- noun
Etymology: infra- + structure
: the underlying foundation or basic framework (as of an organization or a system) : substructure ; especially : the permanent installations required for military purposes
ˈinfrə+ˌ- noun
Etymology: infra- + structure
: the underlying foundation or basic framework (as of an organization or a system) : substructure ; especially : the permanent installations required for military purposes
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012