The word Gneisose is misspelled against Gneissose, an adjective meaning "Having the structure of gneiss."
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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.