Atonomasy or Autonomasy: How To spell?

The word Atonomasy is misspelled against Autonomasy, a noun meaning "The use of a word of common or general signification for the name of a particular thing; as, "He has gone to town," for, "He has gone to London.""

Word begins with consecutive vowels 'AU' followed by alphabets 'tonomasy' is misspelled as 'A' as letter 'U' is phonetically ign
Wrong Spelling:  a-tonomasy 
Correct Spelling:  au-tonomasy 
Find more incorrect spellings of Autonomasy to spell right way.

You might be interested to know

Morceaw or Morceau?

Wekao or Wekau?

Gaspereaa or Gaspereau?