Lewis & Short

Panthē̆on or -um, i, n., = Πάνθεον, Πάνθειον,

  1. I. the great temple of Jupiter, built by Agrippa, and restored by Hadrian, M. Aurelius, Septimius Severus, and Caracalla, now the Tempio di S. Maria Rotonda: Agrippae Pantheum, Plin. 36, 5, 4, § 38 (but id. 36, 15, 24, § 102, read tectum diribitori); 34, 3, 7, § 13; 9, 35, 58, § 121; cf. Inscr. Orell. 34; Spart. Hadr. 19; Amm. 16, 10, 14.
  2. II. The statue of a god, adorned with the symbols of several other deities, Aus. Epigr. 30; Inscr. Grut. 1, 3 sq.; cf. Spon. Miscell. Antiq. p. 19.