auxiliary
adjectiveDefinition of auxiliary
(Entry 1 of 2)
1a
: 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
In "I will go," the word "will" is an auxiliary verb.
3a
: supplementary
a telescope with its auxiliary apparatus
b
: constituting a reserve
an auxiliary power plant an auxiliary police force
auxiliary
noun
plural auxiliaries
Definition of auxiliary (Entry 2 of 2)
1a
: an auxiliary person, group, or device
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
grammar
: an auxiliary verb
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