"Imperial" is a word in ENGLISH

Of superior or unusual size or excellence; as, imperial
paper; imperial tea, etc.

Anything of unusual size or excellence, as a large
decanter, a kind of large photograph, a large sheet of drowing,
printing, or writing paper, etc.

A kind of fine cloth brought into England from Greece. or
other Eastern countries, in the Middle Ages.

Belonging to, or suitable to, supreme authority, or one
who wields it; royal; sovereign; supreme.

An outside seat on a diligence.

A gold coin of Russia worth ten rubles, or about eight
dollars.

A luggage case on the top of a coach.

The tuft of hair on a man's lower lip and chin; -- so
called from the style of beard of Napoleon III.

Of or pertaining to an empire, or to an emperor; as, an
imperial government; imperial authority or edict.