ANCILLARY
—adjective. 1 (esp of health workers) providing essential support. 2 (often foll. By to) subordinate, subservient. —none. (plural. -ies) 1 ancillary worker. 2 auxiliary or accessory. [latin ancilla handmaid] -ancy suffix forming nouns denoting a quality (constancy) or state (infancy). [latin -antia]