Pronunciation: (in-kum'bun-sē), [key]
—pl. -cies for 2–5.
1. the quality or state of being incumbent.
2. the position or term of an incumbent.
3. something that is incumbent.
4. a duty or obligation: my incumbencies as head of the organization.
5. Archaic.an incumbent weight or mass.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.