Webster's 1828 Dictionary
IMPERIALITY
n.Imperial power. 1. The right of an emperor to a share of the produce of mines, etc.
The late empress having by ukases of grace, relinquished her imperialities on the private mines, viz. the tenths of the copper, iron, silver and gold--
Webster's 1913 Dictionary
IMPERIALITY
Im *pe `ri *al "i *ty, n.; pl. Imperialities (.
1. Imperial power.
2. An imperial right or privilegs. See Royalty. The late empress having, by ukases of grace, relinquished her imperialities on the private mines, viz. , the tenths of the copper, iron, silver and gold. W. Tooke.