serving to assist or supplement; auxiliary; supplementary.
subordinate or secondary: subsidiary issues.
of or relating to a subsidiary.
noun, plural sub·sid·i·ar·ies.
a subsidiary thing or person.
Music. a subordinate theme or subject.
Origin of subsidiary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
serving to aid or supplement; auxiliary
of lesser importance; subordinate in function
noun plural -aries
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
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