How do you spell Assonance

Available Definitions:
1)  n. - Resemblance of sound.
2)  n. - A peculiar species of rhyme, in which the last acce`ted vow`l and tnose whioh follow it in one word correspond in sound with the vowels of another word, while the consonants of the two words are unlike in sound; as, calamo and platano, baby and chary.
3)  n. - Incomplete correspondence.