1 less important than something elseThat is just a secondary consideration.Experience is what matters—age is of secondary importance.secondary to something Raising animals was only secondary to other forms of farming.
2 happening as a result of something elsea secondary infectiona secondary effecta secondary colour (= made from mixing two primary colours)
3 [only before noun] connected with teaching children of 11-18 yearssecondary teachersthe secondary curriculum compare elementary, primary, tertiarysecondarily
ˈsekəndrəli
ˌsekənˈderəli
