Quadron or Quadroon: How To spell?
The word Quadron is misspelled against Quadroon, a noun meaning "The offspring of a mulatto and a white person; a person quarter-blooded."
Quadroon has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings quadr & n which should not be misspelled with single 'O'
Wrong Spelling:  quadr-o-n  Correct Spelling:  quadr-oo-n 
Check more misspelled words of Quadroon to spell it correct.