assonance
Concise Oxford English Dictionary © 2008 Oxford University Press:
assonance /ˈas(ə)nəns/
▶noun the resemblance of sound between syllables in nearby words arising from the rhyming of stressed vowels (e.g. sonnet, porridge), and also from the use of identical consonants with different vowels (e.g. killed, cold, culled).
– derivatives
assonant adjective,
assonate /-neɪt/ verb.
assonant adjective,
assonate /-neɪt/ verb.
– origin C18: from Fr., from L. assonare ‘respond to’.
'assonance' also found in these Oxford entries:

