Metamericaly or Metamerically: How To spell?
The word Metamericaly is misspelled against Metamerically, an adverb meaning "In a metameric manner."
Metamerically has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings metamerica & y which should not be misspelled with single 'L'
Wrong Spelling:  metamerica-l-y  Correct Spelling:  metamerica-ll-y 
Find more wrongly spelled words of Metamerically to spell it well.