From BiblePortal Wikipedia

Webster's Dictionary [1]

(n.) A deity among the Greeks and Romans. He was the god of light and day (the "sun god"), of archery, prophecy, medicine, poetry, and music, etc., and was represented as the model of manly grace and beauty; - called also Phebus.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [2]

( Ἀπόλλων , the Destroyer, so called because his shafts, the rays of Phebus or the sun, inflict disease or "the sun-stroke" in Oriental climates), one of the great divinities of the Greeks, according to Homer ( Iliad, 1, 21, 316) the-son of Jupiter (Zeus) and Leto (Latona), and the brother of Artemis or Diana (Hesiod, Theogn. 918). He was fabled to be the god who punishes the wicked and insolent, who affords help and wards off evil, particularly from cattle, who presided over the foundation of cities, and especially as the god of music and prophecy (Smith, Dict. Of Class. Mythol. s.v.). (See Oracle). In this last office he is indirectly alluded to in the account of the daemoniac damsel cured by Paul ( Acts 16:16). (See Pythoness). Josephus mentions an audience of Archelaus held by Tiberius in a splendid temple of Apollo built by him in Rome ( Ant. 17, 11, 1); and he also speaks of a temple of his at Gaza, into which the nobles of the city took refuge from the massacre by Alexander Jannaeus , ( Ant. 13, 13, 3).

The Nuttall Encyclopedia [3]

The god par excellence of the Greeks, identified with the sun and all that we owe to it in the shape of inspiration, art, poetry, and medicine; son of Zeus and Leto; twin brother of Artemis; born in the island of Delos ( q. v .), whither Leto had fled from the jealous Hera; his favourite oracle at Delphi.