Sub-sĕrv'i-ençe or Sub-sĕrv'i-en-çy, n.

noun

n. The condition of being subservient; use or operation that promotes some purpose.

The body, wherein appears much fitness, use, and subserviency to infinite functions. Bentley.

There is a regular subordination and subserviency among all the parts to beneficial ends. Cheyne.