Mamilloid or Mammilloid: How To spell?
The word Mamilloid is misspelled against Mammilloid, an adjective meaning "Like a mammilla or nipple; mammilliform."
Mammilloid has double "mm" is mispronounced as "m"Remember double 'MM' in between the strings ma & illoid which should not be misspelled with single 'M'
Wrong Spelling:  ma-m-illoid  Correct Spelling:  ma-mm-illoid 
Find more incorrect spellings of Mammilloid to spell right way.