prose poem

Short definition from Wiktionary

Noun

1. 1
   A literary text written in the manner of prose—without the fixed lines, rhyme, and meter often characteristic of poetry—but nonetheless clearly possessing some of the distinctive attributes of poetry, such as lyrical language, evocation of feeling, vivid imagery, metaphor, and linguistic devices like assonance or alliteration.
2. 2
   Alternative form of prose poem.