Prestriction or Presstriction: How To spell?
The word Prestriction is misspelled against Presstriction, a noun meaning "Obstruction, dimness, or defect of sight."
Presstriction has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings pre & triction which should not be misspelled with single 'S'
Wrong Spelling:  pre-s-triction  Correct Spelling:  pre-ss-triction 
Find more incorrect spellings of Presstriction to spell right way.