Perisci or Periscii: How To spell?

The word Perisci is misspelled against Periscii, a noun meaning "Those who live within a polar circle, whose shadows, during some summer days, will move entirely round, falling toward every point of the compass."

--> Periscii has double 'ii' in the end mispronounced as 'i'
Remember double 'II' appears in the end of this word which should not be misspelled with single 'I'
Wrong Spelling:  perisc-i 
Correct Spelling:  perisc-ii 
Find more wrongly spelled words of Periscii to spell it well.

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