- Petosiris
- Pĕtŏsīris, ĭdis, m., = Petosiris, a celebrated Egyptian mathematician and astrologer, Plin. 2, 23, 21, § 88; 7, 49, 50, § 160; Firm. Math. 4, praef.—Hence, transf., a great mathematician, astrologer, in gen., Juv. 6, 580.
Lewis & Short Latin Dictionary, 1879. - Revised, Enlarged, and in Great Part Rewritten. Charlton T. Lewis, Ph.D. and Charles Short. 2011.