All rhymes and all approaches to rhyme, form the assonant metres.
"The English Language"
Robert Gordon Latham
The word assonant has a limited as well as a general sense.
"The English Language"
Robert Gordon Latham
In the more highly wrought episodes, like the Cupid and Psyche, the new Latin of Apuleius often approximates nearly to assonant or rhymed verse.
"Latin Literature"
J. W. Mackail