Aparatus or Apparatus: How To spell?
The word Aparatus is misspelled against Apparatus, a noun meaning "A collection of organs all of which unite in a common function; as, the respiratory apparatus."
Apparatus has double "pp" is mispronounced as "p"Remember double 'PP' in between the strings a & aratus which should not be misspelled with single 'P'
Wrong Spelling:  a-p-aratus  Correct Spelling:  a-pp-aratus 
Check more misspelled words of Apparatus to spell it correct.