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[awg-zil-yuh-ree, -zil-uh-] /ɔgˈzɪl yə ri, -ˈzɪl ə-/
additional; supplementary; reserve:
an auxiliary police force.
used as a substitute or reserve in case of need:
The hospital has an auxiliary power system in case of a blackout.
(of a boat) having an engine that can be used to supplement the sails:
an auxiliary yawl.
giving support; serving as an aid; helpful:
The mind and emotions are auxiliary to each other. Passion is auxiliary to art.
noun, plural auxiliaries.
a person or thing that gives aid of any kind; helper.
an organization allied with, but subsidiary to, a main body of restricted membership, especially one composed of members' relatives:
The men's club and the ladies' auxiliary were merged into one organization.
auxiliaries, foreign troops in the service of a nation at war.
Navy. a naval vessel designed for other than combat purposes, as a tug, supply ship, or transport.
Nautical. a sailing vessel carrying an auxiliary propulsion engine or engines.
1595-1605; < Latin auxiliārius assisting, aiding, helping, equivalent to auxili(um) aid, help (aux(us) increased, augmented (past participle of augēre: aug- increase + -sus, variant of -tus past participle suffix) + -ilium noun suffix) + -ārius -ary
2. backup, ancillary, secondary. 5. aide, ally, assistant; help. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for auxiliaries
  • My favorite part of speech is the group of little guys known as modal auxiliaries or informally, modals.
  • He should think much harder about whether his plans for civilian auxiliaries are wise.
  • Prisons are being broken open, weapons looted, policemen and police auxiliaries are turning gangster.
  • Literatures lend things of worth to one another, but only as auxiliaries and by gradual stages.
  • If auxiliaries are involved, include the following in the notice to the wage earner.
  • Procedure when an allegedly deceased beneficiary is payee for auxiliaries.
  • Has the option to elect or decline to have benefits continued for any auxiliaries.
  • The benefits of other auxiliaries and survivors are reduced for the maximum, not taking into account the divorced beneficiary.
  • Enter the number of auxiliaries in the first column.
  • Compute the amount payable to the phaseout student and the other auxiliaries.
British Dictionary definitions for auxiliaries


/ɔːɡˈzɪljərɪz; -ˈzɪlə-/
plural noun
foreign or allied troops serving another nation; mercenaries


/ɔːɡˈzɪljərɪ; -ˈzɪlə-/
secondary or supplementary
(nautical) (of a sailing vessel) having an engine an auxiliary sloop
noun (pl) -ries
a person or thing that supports or supplements; subordinate or assistant
  1. a sailing vessel with an engine
  2. the engine of such a vessel
(navy) a vessel such as a tug, hospital ship, etc, not used for combat
Word Origin
C17: from Latin auxiliārius bringing aid, from auxilium help, from augēre to increase, enlarge, strengthen
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
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Word Origin and History for auxiliaries
c.1600, from L. auxiliaris "helpful," from auxilium "aid, help, support," related to auctus, pp. of augere "to increase" (see augment). Military noun meaning "foreign troops in service of a nation at war" is from c.1600.
Online Etymology Dictionary, © 2010 Douglas Harper
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auxiliaries in Medicine

auxiliary aux·il·ia·ry (ôg-zĭl'yə-rē, -zĭl'ə-rē)

  1. Functioning in an augmenting capacity; supplementary.

  2. Functioning as a subordinate; secondary.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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