The word Lacteyn is misspelled against Lactean, an adjective meaning "Lacteal; conveying chyle."
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Lactean has vowels 'ea' together mispronounced as 'ey'
Word contains consecutive vowels 'EA' in between alphabets lact & n is misspelled as 'EY'
Wrong Spelling:  lact-ey-n 
Correct Spelling:  lact-ea-n 
Explore spell check of Lactean to spell without errors.