Assonant

resemblance of sounds.
also called vowel rhyme. prosody. rhyme in which the same vowel sounds are used with different consonants in the stressed syllables of the rhyming words, as in penitent and reticence.
partial agreement or correspondence.
historical examples

it is written in the -ssonant, or vowel rhyme, that was universal among european nations in the early stage of their civilization.
national epics kate milner rabb

edom means red, and bossrah is -ssonant to bsser, a vinedresser.
the expositor’s bible george adam smith

all rhymes and all approaches to rhyme, form the -ssonant metres.
the english language robert gordon latham

the versification is careless; when rhyme hampered the poet he dropped it, and used instead the -ssonant rhyme.
national epics kate milner rabb

bel crouches—as men have crouched to bel; nebo cowers—a stronger verb than crouches, but -ssonant to it, like cower to crouch.
the expositor’s bible george adam smith

i observed no instance of the -ssonant rhyme; but there are several glosses, or, in the portuguese word, grosas.
introduction to the literature of europe in the fifteenth, sixteenth, and seventeenth centuries, vol. 1 henry hallam

noun
the use of the same vowel sound with different consonants or the same consonant with different vowels in successive words or stressed syllables, as in a line of verse. examples are time and light or mystery and mastery
partial correspondence; rough similarity
n.

1727, “resemblance of sounds between words,” from french -ssonance, from -ssonant, from latin -ssonantem (nominative -ssonans), present participle of -ssonare “to resound, respond to,” from ad- “to” (see ad-) + sonare “to sound” (see sonata). properly, in prosody, “rhyming of accented vowels, but not consonants” (1823).