Ancillary — synonyms, definition

1. ancillary (a)

accessory affiliated appurtenant auxiliary collateral conditional dependent relative secondary subordinate subservient subsidiary supplementary supporting

2. ancillary (Noun)

accessory appurtenant auxiliary secondary subordinate subsidiary supplementary

ancillary (Noun) — Someone or something that serves an ancillary function.

3. ancillary (Adjective)

adjunct adjuvant

ancillary (Adjective) — Furnishing added support. ex. "an ancillary pump"