Spirilum or Spirillum: How To spell?

The word Spirilum is misspelled against Spirillum, a noun meaning "A genus of common motile microorganisms (Spirobacteria) having the form of spiral-shaped filaments. One species is said to be the cause of relapsing fever."

Spirillum has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings spiri & um which should not be misspelled with single 'L'
Wrong Spelling:  spiri-l-um 
Correct Spelling:  spiri-ll-um 
Check more misspelled words of Spirillum to spell it correct.