[sub.sid.i.ary] adj [L subsidiarius, fr. subsidium reserve troops] (1543) 1 a: furnishing aid or support: auxiliary "~ details" b: of secondary importance "a ~ stream"
2: of, relating to, or constituting a subsidy "a ~ payment to an ally" -- sub.sid.i.ari.ly adv
[2]subsidiary n, pl -ar.ies (1603): one that is subsidiary; esp: a company wholly controlled by another