/an"seuh ler'ee/ or, esp. Brit., /an sil"euh ree/ , adj., n., pl. ancillaries .
adj.
1. subordinate; subsidiary.
2. auxiliary; assisting.
n.
3. something that serves in an ancillary capacity: Slides, records, and other ancillaries can be used with the basic textbook.
[ 1660-70; ancill ( a ) (see ANCILLA) + -ARY; cf. L ancillaris having the status of a female slave, with -aris -AR 1 ]