tertiaryter·tia·ry /ˈtɜːʃəriˈtɜːrʃieri, -ʃəri/ adjectiveadj [only before a noun]COMMERCE tertiary industries or companies are involved in providing services, rather than the production of RAW MATERIALs (=materials used in manufacturing) or manufacturingThe government plans to transform the current farm-based rural economy into a mixture of primary, secondary and tertiary industries.
The city’s economy has moved away from heavy industries towards an expanded tertiary sector.