Onomatopoaua or Onomatopoeia: How To spell?

The word Onomatopoaua is misspelled against Onomatopoeia, a noun meaning "The formation of words in imitation of sounds; a figure of speech in which the sound of a word is imitative of the sound of the thing which the word represents; as, the buzz of bees; the hiss of a goose; the crackle of fire."