Sagitarius or Sagittarius: How To spell?
The word Sagitarius is misspelled against Sagittarius, a noun meaning "A zodiacal constellation, represented on maps and globes as a centaur shooting an arrow."
Sagittarius has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings sagi & arius which should not be misspelled with single 'T'
Wrong Spelling:  sagi-t-arius  Correct Spelling:  sagi-tt-arius 
Check more misspelled words of Sagittarius to spell it correct.