imperial

The definition of imperial is something magnificent, domineering or related to an empire.

(adjective)

A royal government with control over an empire is an example of an imperial government.
A person with a domineering and controlling manner is an example of someone who would be described as having an imperial personality.
A mansion that is magnificent and impresses everyone is an example of an imperial mansion.

See imperial in Webster's New World College Dictionary

adjective

of an empire
of a country having control or sovereignty over other countries or colonies
of, or having the rank of, an emperor or empress
having supreme authority; sovereign
1. majestic; august
2. imperious
of great size or superior quality
1. of or pertaining to the Commonwealth
2. according to the standard of weights and measures set by British law and used in Great Britain, Canada, and some other countries

Origin: OFr < L imperialis < imperium, empire

noun

a supporter or a soldier of any of the Holy Roman emperors
the roof or top of a coach, or a luggage case carried on it
an article of great size or superior quality
a size of writing paper measuring 23 by 31 inches (in England, 22 by 30 or 32 inches)
☆
Origin: after the emperor Louis Napoleon, who set this fashion
a pointed tuft of beard on the lower lip and chin

Related Forms:

See imperial in American Heritage Dictionary 4

adjective

Of, relating to, or suggestive of an empire or a sovereign, especially an emperor or empress: imperial rule; the imperial palace.
Ruling over extensive territories or over colonies or dependencies: imperial nations.
a. Having supreme authority; sovereign.
b. Regal; majestic.
Outstanding in size or quality.
Of or belonging to the British Imperial System of weights and measures.

noun