The Collaborative International Dictionary
Periscii
Periscians \Pe*ris"cians\, Periscii \Pe*ris"ci*i\, n. pl. [NL. See Periscian.] Those who live within a polar circle, whose shadows, during some summer days, will move entirely round, falling toward every point of the compass.
Wiktionary
periscii
n. The inhabitants of the polar regions (whose shadows, during part of the summer, make a complete revolution).
Usage examples of "periscii".
The Periscii, living within the Polar circle, see the sun move round them, and consequently project their shadows in all directions (J.