What does "ancillary" mean?

Something that serves an ancillary function, such as an easel for a painter.

What is a synonym for "ancillary"?

Common synonyms include: appurtenant, assisting, accessory, accessory, accessory, accompanying.

Pronounced //ænˈsɪl.ə.ɹiː//.

//ænˈsɪl.ə.ɹiː// adj, noun

adj, noun ·Moderate ·College level

Noun

1
Something that serves an ancillary function, such as an easel for a painter.
"Auxiliaries and ancillaries are comprehensive, and include a Westinghouse motor-driven recriprocating compressor used for locomotive braking and general service air, two rotary exhauster sets for train brakes when hauling passenger or fitted freight trains, and an oil-fired train heating boiler."
2
An auxiliary. archaic

Adjective

1
Subordinate; secondary; auxiliary.
"[…] how easily he took all things along with him,—the persons, the opinions, and the day, and nature became ancillary to a man."

Adjective