Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

Pē̆trōnĭa, ae, v. 2. Petronius.

1. pē̆trōnĭus, a, um, adj. [1. petra], rock-, crag-, mountain- (very rare): canes, Grat. Cyneg. 202.

2. Pē̆trōnĭus, i, m., name of a Roman gens.
So, esp.: Petronius Arbiter, a Roman knight, a favorite of the emperor Nero, perh. the same person with Petronius, the author of a Latin romance which is preserved in a fragmentary state, Tac. A. 16, 17 sq.
In fem.: Pē̆trōnĭa, ae, the first wife of the emperor Vitellius, Tac. H. 2, 64; Suet. Vit. 6.
Hence,

  1. A. Pē̆trōnĭus, a, um, adj., of or belonging to a Petronius, Petronian: Petronia amnis est in Tiberim profluens, quam magistratus auspicato transeunt, cum in campo quid agere voluntquod genus auspicii peremne vocatur, Fest. p. 250 Müll.: Petronia lex, respecting slaves: post legem Petroniam et senatusconsulta ad eam legem pertinentia, dominis, potestas ablata est ad bestias depugnandas suo arbitrio servos tradere, Dig. 48, 8, 11, § 3; ib. 40, 1, 24.
  2. B. Pē̆trōnĭānus, a, um, adj., of or belonging to a Petronius, Petronian: Petroniana Albucia, Fulg. Myth. praef. 1.