Alantoid or Allantoid: How To spell?

The word Alantoid is misspelled against Allantoid, a noun meaning "A membranous appendage of the embryos of mammals, birds, and reptiles, -- in mammals serving to connect the fetus with the parent; the urinary vesicle."

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