The Collaborative International Dictionary
Imperialities
Imperiality \Im*pe`ri*al"i*ty\, n.; pl. Imperialities.
Imperial power.
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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.
Wiktionary
imperialities
n. (plural of imperiality English)