1. In Greek and Roman mythology, the god of music, poetry, healing, prophecy, and the sun.
Usage: Capitalized when referring to the deity; Often used in allusions to artistic or musical excellence
2. A handsome young man; a man of great beauty or talent.
Usage: Lowercase; derived from the mythological god; Informal or literary usage

Examples

• Apollo was worshipped throughout ancient Greece as the god of the sun and music.
• The sculpture depicted Apollo with his characteristic lyre.
• He was considered an apollo among the dancers in the company.
• In classical mythology, Apollo could heal diseases and predict the future.
• The young musician was hailed as an apollo for his extraordinary talent.