Ancillary is defined as subordinate or helping.(adjective)
An extra workbook and live recordings of chapter are examples of ancillary items to a textbook.
The definition of ancillary means something that is helping or subordinate, but not as necessary.(noun)
An example of ancillary is an overflow valve that is designed to take the pressure off of a main pumping system.
See ancillary in Webster's New World College Dictionary
Origin: < L ancillaris < ancilla, maidservant, dim. of fem. of anculus, servant
See ancillary in American Heritage Dictionary 4
Origin: From Latin ancilla, maidservant
Origin: , feminine diminutive of anculus, servant; see kwel-1 in Indo-European roots.
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