source: Kouya no Kotobuki Hikoutai Review: Take to the skies

1. written or spoken language in its ordinary form, without metrical structure:

散文(体)(↔ poetry, verse)

e.g. a short story in prose

e.g. as modifier : a prose passage.

plain or dull writing, discourse, or expression:

〔装飾の少ない〕事実伝達の［無味乾燥な］文［話し方］

e.g. medical and scientific prose.

2. another term for sequence (sense 4 of the noun).

1. no object talk tediously:

e.g. prosing on about female beauty.

2. with object dated compose in or convert into prose.

proser |ˈprōzər| noun

Middle English: via Old French from Latin prosa (oratio) ‘straightforward (discourse’), feminine of prosus, earlier prorsus ‘direct’.