Dictionary

1auxiliary

adjective aux·il·ia·ry \g-ˈzil-yə-rē, -ˈzil-rē, -ˈzi-lə-\

: available to provide extra help, power, etc., when it is needed

Full Definition of AUXILIARY

1
a :  offering or providing help
b :  functioning in a subsidiary capacity <an auxiliary branch of the state university>
2
of a verb :  accompanying another verb and typically expressing person, number, mood, or tense
3
a :  supplementary
b :  constituting a reserve <an auxiliary power plant>
4
:  equipped with sails and a supplementary inboard engine <an auxiliary sloop>

Examples of AUXILIARY

  1. a sailboat with an auxiliary engine
  2. <the auditorium has an auxiliary cooling system used only on particularly sweltering days>
  3. Travelers have also been griping about a lack of air-conditioning while planes are on the tarmac—even after delays stretch for hours. Airlines blame the problem on a breakdown of a plane's auxiliary power unit. —Darren Everson, Wall Street Journal, 8 Aug. 2007

Origin of AUXILIARY

Latin auxiliaris, from auxilium help; akin to Latin augēre to increase — more at eke
First Known Use: 15th century

2auxiliary

noun aux·il·ia·ry \g-ˈzil-yə-rē, -ˈzil-rē, -ˈzi-lə-\

: a group that provides help or assistance

plural aux·il·ia·ries

Full Definition of AUXILIARY

1
a :  an auxiliary person, group, or device (see 1auxiliary); specifically :  a member of a foreign force serving a nation at war
b :  a Roman Catholic titular bishop assisting a diocesan bishop and not having the right of succession —called also auxiliary bishop
2
:  a sailing boat or ship equipped with a supplementary inboard engine
3
:  an auxiliary verb

Examples of AUXILIARY

  1. In 1944 Forrestal also began a program of sending black enlisted men to serve in a limited number of fleet auxiliaries. These were still not warships, but they were seagoing vessels and closer to the fighting Navy than the small harbor-defense craft and harbor auxiliaries that had initially been open to black crews. —The Golden Thirteen, 1993

Origin of AUXILIARY

(see 1auxiliary)
First Known Use: 1567
AUXILIARY Defined for Kids

1auxiliary

adjective aux·il·ia·ry \g-ˈzi-lyə-rē, -ˈzi-lə-rē, -ˈzil-rē\

Definition of AUXILIARY for Kids

:  available to provide something extra <an auxiliary engine>

2auxiliary

noun
plural aux·il·ia·ries

Definition of AUXILIARY for Kids

1
:  a group that provides assistance
July 28, 2015
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