[suh b-sid-ee-er-ee]
  1. serving to assist or supplement; auxiliary; supplementary.
  2. subordinate or secondary: subsidiary issues.
  3. of or relating to a subsidiary.
noun, plural sub·sid·i·ar·ies.
  1. a subsidiary thing or person.
  2. subsidiary company.
  3. Music. a subordinate theme or subject.

Origin of subsidiary

1535–45; < Latin subsidiārius, equivalent to subsidi(um) (see subsidy) + -ārius -ary
Related formssub·sid·i·ar·i·ly [suh b-sid-ee-air-uh-lee, -sid-ee-er-] /səbˌsɪd iˈɛər ə li, -ˈsɪd iˌɛr-/, adverbsub·sid·i·ar·i·ness, nounnon·sub·sid·i·ar·y, adjective, noun, plural non·sub·sid·i·ar·ies.un·sub·sid·i·ar·y, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for non-subsidiary


  1. serving to aid or supplement; auxiliary
  2. of lesser importance; subordinate in function
noun plural -aries
  1. a person who or thing that is subsidiary
  2. short for subsidiary company
Derived Formssubsidiarily, adverbsubsidiariness, noun

Word Origin for subsidiary

C16: from Latin subsidiārius supporting, from subsidium subsidy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for non-subsidiary



1540s, from Middle French subsidiaire, from Latin subsidiarius "serving to assist or supplement," from subsidium "help, aid" (see subsidy).

Online Etymology Dictionary, © 2010 Douglas Harper