P / Pĕtŏsīris
noun

Pĕtŏsīris

gen. Pĕtŏsīrĭdis · gender masculine · decl. 3rd
= Πετόσιρις
a celebrated Egyptian mathematician and astrologer; a great mathematician; astrologer
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.