The word Perigan is misspelled against Perigean, an adjective meaning "Pertaining to the perigee."
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Perigean has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets perig & n is misspelled as 'A'
Wrong Spelling:  perig-a-n 
Correct Spelling:  perig-ea-n 
Find more wrongly spelled words of Perigean to spell it well.