Sub*sid"i*a*ry (?), a. [L. subsidiarius: cf. F. subsidiaire. See Subsidy.] 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.

They constituted a useful subsidiary testimony of another state of existence.

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.

Sub*sid"i*a*ry, n.; pl. Subsidiaries (&?;). One who, or that which, contributes aid or additional supplies; an assistant; an auxiliary. Hammond.

Sub*sid"i*a*ry (?), a. [L. subsidiarius: cf. F. subsidiaire. See Subsidy.] 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.

They constituted a useful subsidiary testimony of another state of existence.

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.

Sub*sid"i*a*ry, n.; pl. Subsidiaries (&?;). One who, or that which, contributes aid or additional supplies; an assistant; an auxiliary. Hammond.

• auxiliary or supplemental
  
• secondary or subordinate
  
• of, or relating to a subsidy
  
• A company owned by the parent company or holding company
  
• (music) a subordinate theme