The Collaborative International Dictionary of English v.0.48:
Dormancy \Dor"man*cy\, n. [From Dormant.]
The state of being dormant; quiescence; abeyance.
It is by lying dormant a long time, or being . . . very
rarely exercised, that arbitrary power steals upon a
2. (Her.) In a sleeping posture; as, a lion dormant; --
distinguished from couchant.
Dormant partner (Com.), a partner who takes no share in the
active business of a company or partnership, but is
entitled to a share of the profits, and subject to a share
in losses; -- called also sleeping partner or silent
Dormant window (Arch.), a dormer window. See Dormer.
Table dormant, a stationary table. [Obs.] --Chaucer.