Fisipedal or Fissipedal: How To spell?
The word Fisipedal is misspelled against Fissipedal, an adjective meaning "Having the toes separated to the base. [See Aves.]"
Fissipedal has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings fi & ipedal which should not be misspelled with single 'S'
Wrong Spelling:  fi-s-ipedal  Correct Spelling:  fi-ss-ipedal 
Find more wrongly spelled words of Fissipedal to spell it well.