Ammōn, better Hammon, ōnis, m. Egypt. Amun, = Ἄμμων, a name of Jupiler, worshipped in Africa under the form of a ram (on the present oasis Siwah). Connected with his temple was an oracle often consulted by the ancients; cf. Cat. 7, 5 sqq.; Curt. 4, 7; Luc. 9, 511 al.

—Whence Ammonis cornu, a gold-colored precious stone of the shape of a ram's horn, ammonite, Plin. 37, 10, 60, § 167.

—Hence, Ammōniacus, a, um, belonging to Ammon (Africa, Libya): sal, Plin. 31, 7, 39, § 79; Col. 6, 17, 7; Ov. Med. Fac. 94.

—Ammō-niacum, i, n. subst., a resinous gum, which distils from a tree near the temple of Jupiter Ammon: Ammoniaci lacrima, Plin. 12, 23, 49, § 107: Ammoniaci lacrimae, id. 20, 18, 75, § 197: Ammoniaci guttae, Scrib. Comp. 28, 35; Cels. 5, 5.