prioribus
prioribus is a Latin form of prior, meaning “earlier, former; first of two”. It is the ablative plural neuter comparative adjective.
Found 103 times in the Latin texts on Socratos.
Where it is used
Cicero, De Republica 2.36: … video publicis equis adsignandis et alendis orborum et viduarum tributis fuisse quondam diligentis. Sed tamen prioribus equitum partibus secundis additis ∞ ⅰↄ ⅽⅽⅽ fecit equites numerumque duplicavit. Postea bello subegit Aequorum …
All forms of prior (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.