Tinitus or Tinnitus: How To spell?
The word Tinitus is misspelled against Tinnitus, a noun meaning "A ringing, whistling, or other imaginary noise perceived in the ears; -- called also tinnitus aurium."
Tinnitus has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings ti & itus which should not be misspelled with single 'N'
Wrong Spelling:  ti-n-itus  Correct Spelling:  ti-nn-itus 
Check more misspelled words of Tinnitus to spell it correct.