olemus
(a) tütar-; alam-
Wiktionary, adj:
2. secondary or subordinate

foreign subsidiary -- välisfiliaal
subsidiary bank -- tütarpank; panga harukontor
subsidiary company -- tütarettevõte
subsidiary plant -- tehase filiaal
subsidiary unit -- allüksus

(b) tütarfirma; filiaal
Wiktionary, noun:
1. a company owned by a parent company or a holding company, also called daughter company or sister company
https://en.wikipedia.org/wiki/Subsidiary

vt ka
- alam- (1)
- tütar- (1)