Auxiliary, which comes from the Latin noun auxilium, meaning “aid,” “assistance,” or “reinforcement,” is used in a wide range of capacities in English to describe a person or thing that assists another.

Well trained Auxiliary Officers supplement regular law enforcement personnel with calls for service, security, traffic and crowd control, and other related duties within their scope of authority, while …

AUXILIARY definition: additional; supplementary; reserve. See examples of auxiliary used in a sentence.

AUXILIARY definition: 1. giving help or support, especially to a more important person or thing: 2. a person whose job…. Learn more.

Auxiliary definition: Giving assistance or support; helping.

An auxiliary is an organization that is connected with, but less important than, another organization; for example, an organization for the wives of the members of the main organization.

Auxiliary members are supplemental to, not substitutes for, sworn law enforcement personnel. Auxiliary members are not sworn police officers, are not vested with arrest powers, and are not authorized to …

Jan 20, 2026 · Noun auxiliary (plural auxiliaries) A person or group that acts in an auxiliary manner.

Definition of auxiliary noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

an organization allied with, but subsidiary to, a main body of restricted membership, esp. one composed of members' relatives: The men's club and the ladies' auxiliary were merged into one organization.