Hutonian or Huttonian: How To spell?
The word Hutonian is misspelled against Huttonian, an adjective meaning "Relating to what is now called the Plutonic theory of the earth, first advanced by Dr. James Hutton."
Huttonian has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings hu & onian which should not be misspelled with single 'T'
Wrong Spelling:  hu-t-onian  Correct Spelling:  hu-tt-onian 
Check more misspelled words of Huttonian to spell it correct.