American English

Definition of auxiliary noun from the Oxford Advanced American Dictionary



    , NAmE//ɔɡˈzɪləri//
    (pl. auxiliaries)
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  1. 1(also auxiliary verb) (grammar) a verb such as be, do, and have used with main verbs to show tense, etc. and to form questions, and negatives In the question “Do you know where he has gone?”, “do” and “has” are auxiliaries.
  2. 2an individual worker or a group of workers who gives help or support to the main group of workers nursing auxiliaries
See the Oxford Advanced Learner's Dictionary entry: auxiliary