Lewis & Short

Phăĕthon (dissyl.: fulmine Phaethon, Varr. ap. Quint. 1, 5, 18), ontis, m., = Φαέθων (the shining one). Son of Helios and Clymene, who, having obtained from his father permission to drive the sun’s chariot for a day, lost control of the steeds, and was struck down by a thunderbolt of Jupiter, to prevent his setting the earth on fire, Cic. Off. 3, 25, 94; id. N. D. 3, 31, 76; cf.: Phaëthontem orbi terrarum educare, Suet. Calig. 11; Ov. M. 2, 47 sq.; Verg. A. 10, 189.

  1. B. An epithet of the sun (poet.), Verg. A. 5, 105; Sil. 6, 3.
    Hence,
  1. A. Phăĕ-thontēus, a, um, adj., = Φαεθόντειος, of or belonging to Phaëthon, Phaëthontean (poet.): ignes, Ov. M. 4, 246: Padus (because Phaëthon is said to have fallen into the Padus), Mart. 10, 12, 2: favilla, i. e. fulmen, Stat. Th. 1, 221: umbra, i. e. of the poplar (because the sisters of Phaëthon were changed into poplars), Mart. 6, 15, 1.
  2. B. Phăĕthontĭas, ădis, f., = Φαεθοντιάς, a Phaëthontiad, i. e. a sister of Phaëthon. They wept for their brother, and were changed into poplars (acc. to others, into alders), while their tears were converted into amber: Phaëthontiadum silva sororum, Sen. Herc. Oet. 185; Verg. E. 6, 62; cf. Ov. M. 2, 340 sqq.
  3. C. Phăĕthentis, ĭdis, f., = Φαεθοντίς, subst., i. q. Phaëthontias, a Phaëthontiad, a sister of Phaëthon (poet.), Avien. Arat. 792.
    As adj., of or belonging to Phaëthon, Phaëthontian: gutta, amber (into which the tears of Phaëthon’s sisters were said to be converted), Mart. 4, 32, 1.
  4. D. Phăĕthontĭus, a, um, adj., = Φαεθόντιος.
    1. 1. Of or belonging to Phaëthon, Phaëthontian: fabula, Stat. S. 2, 4, 9: amnis, i.e. Padus (v. Phaëthonteus), Sil. 7, 149.
    2. 2. Of or belonging to the sun: ora, the sun’s disk, Sil. 10, 110.