Osa or Ossa: How To spell?
The word Osa is misspelled against Ossa, which is plural of "Os"
Ossa has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings o & a which should not be misspelled with single 'S'
Wrong Spelling:  o-s-a  Correct Spelling:  o-ss-a 
Browse incorrect spellings of Ossa to spell it good.