tertiary
adjective uk/ˈtɜː.ʃər.i/ us/ˈtɝː.ʃi.er.i/
(THIRD)
formal第三的;第三级的;第三位的
relating to a third level or stage
(EDUCATION)
C1 [ before noun ] mainly UK高等教育的，大学教育的
relating to education in colleges and universities
tertiary education 高等教育
(INDUSTRY)
[ before noun ] business specialized第三产业的
A tertiary industry provides a service and is not involved with getting the materials with which products are made, or with making products.