subsidiary
subsidiary
/səbˈsɪdiəri/
1 subsidiary (to something) connected with something but less important than it
subsidiary information
a subsidiary matter
(British English) I'm taking history as a subsidiary subject (= one that is not studied in as great depth as a main subject).
2 (of a business company) owned or controlled by another company
Word Origin
mid 16th cent. (in the sense ‘serving to help or supplement’): from Latin subsidiarius, from subsidium ‘support, assistance’.