SUBSIDIARY

Definitions

1. 1. Furnishing aid; assisting; auxiliary; helping; tributary; especially, aiding in an inferior position or capacity; as, a subsidiary stream. Chief ruler and principal head everywhere, not suffragant and subsidiary. Florio. They constituted a useful subsidiary testimony of another state of existence. Coleridge.
2. 2. Of or pertaining to a subsidy; constituting a subsidy; being a part of, or of the nature of, a subsidy; as, subsidiary payments to an ally. George the Second relied on his subsidiary treaties. Ld. Mahon.