Paralelopipedon or Parallelopipedon: How To spell?
The word Paralelopipedon is misspelled against Parallelopipedon, a noun meaning "A parallelopiped."
Parallelopipedon has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings para & elopipedon which should not be misspelled with single 'L'
Wrong Spelling:  para-l-elopipedon  Correct Spelling:  para-ll-elopipedon 
Find more incorrect spellings of Parallelopipedon to spell right way.