Pozolana or Pozzolana: How To spell?
The word Pozolana is misspelled against Pozzolana, a noun meaning "Volcanic ashes from Pozzuoli, in Italy, used in the manufacture of a kind of mortar which hardens under water."
Pozzolana has double "zz" is mispronounced as "z"Remember double 'ZZ' in between the strings po & olana which should not be misspelled with single 'Z'
Wrong Spelling:  po-z-olana  Correct Spelling:  po-zz-olana 
Find more incorrect spellings of Pozzolana to spell right way.