Pisasphalt or Pissasphalt: How To spell?
The word Pisasphalt is misspelled against Pissasphalt, a noun meaning "Earth pitch; a soft, black bitumen of the consistence of tar, and of a strong smell. It is inflammable, and intermediate between petroleum and asphalt."
Pissasphalt has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings pi & asphalt which should not be misspelled with single 'S'
Wrong Spelling:  pi-s-asphalt  Correct Spelling:  pi-ss-asphalt 
Find more wrongly spelled words of Pissasphalt to spell it well.