F / Firmĭcus
noun

Firmĭcus

gen. Firmĭci · gender masculine · decl. 2nd
Julius F. Maternus
a Roman mathematician in the time of Constantine the Great; author of a work entitled
a Roman mathematician in the time of Constantine the Great, author of a work entitled Matheseos libri octo; cf. Bernhardy, Rom. Lit. pp. 645, 648.