Sigmoidaly or Sigmoidally: How To spell?

The word Sigmoidaly is misspelled against Sigmoidally, an adverb meaning "In a sigmoidal manner."

Sigmoidally has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings sigmoida & y which should not be misspelled with single 'L'
Wrong Spelling:  sigmoida-l-y 
Correct Spelling:  sigmoida-ll-y 
Find more incorrect spellings of Sigmoidally to spell right way.