ˈædʒ.ʌŋkt ˈædʒ.ə.vənt eɪd ˈænsəˌleɹiː ɔːkˈsɪljəɹi ɔɡˈzɪljəɹi ɔːkˈsɪljəɹi ɔɡˈzɪljəɹi sʌbˈsɪ.di.əɹ.i functioning in a supporting capacity the main library and its auxiliary branches furnishing added support an ancillary pump an adjuvant discipline to forms of mysticism The mind and emotions are auxiliary to each other someone who acts as assistant