Quarteron or Quarteroon: How To spell?
The word Quarteron is misspelled against Quarteroon, a noun meaning "A quadroon."
Quarteroon has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings quarter & n which should not be misspelled with single 'O'
Wrong Spelling:  quarter-o-n  Correct Spelling:  quarter-oo-n 
Check more misspelled words of Quarteroon to spell it correct.