Geydic or Gaidic: How To spell?

The word Geydic is misspelled against Gaidic, an adjective meaning "Pertaining to hypogeic acid; -- applied to an acid obtained from hypogeic acid."

Word contains consecutive vowels 'AI' in between alphabets g & dic is misspelled as 'EY'
Wrong Spelling:  g-ey-dic 
Correct Spelling:  g-ai-dic 
Find more wrongly spelled words of Gaidic to spell it well.

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