Gneisose or Gneissose: How To spell?
The word Gneisose is misspelled against Gneissose, an adjective meaning "Having the structure of gneiss."
Gneissose has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings gnei & ose which should not be misspelled with single 'S'
Wrong Spelling:  gnei-s-ose  Correct Spelling:  gnei-ss-ose 
Find more incorrect spellings of Gneissose to spell right way.