Paralelopiped or Parallelopiped: How To spell?
The word Paralelopiped is misspelled against Parallelopiped, a noun meaning "A solid, the faces of which are six parallelograms, the opposite pairs being parallel, and equal to each other; a prism whose base is a parallelogram."
Parallelopiped has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings para & elopiped which should not be misspelled with single 'L'
Wrong Spelling:  para-l-elopiped  Correct Spelling:  para-ll-elopiped 
Find more incorrect spellings of Parallelopiped to spell right way.