auxiliary
US /ɑːɡˈzɪl.i.er.i/
UK /ɑːɡˈzɪl.i.er.i/
1.
providing supplementary or additional help and support
:
•
The hospital has an auxiliary power generator.
•
The ship has an auxiliary engine for emergencies.
1.
a person providing supplementary or additional help and support
:
•
The nurse's auxiliary helped with patient care.
•
She works as an auxiliary in the library.
1.
a verb used in forming the tenses, moods, and voices of other verbs
:
•
In the sentence 'I am going', 'am' is an auxiliary verb.
•
The verbs 'do', 'be', and 'have' can function as auxiliary verbs.