( 63 bc- ad 14), the first Roman emperor; born Gaius Octavius; also called (until 27 bc) Octavian. He was adopted by the will of his great-uncle Julius Caesar and gained supreme power by his defeat of Antony in 31 bc. In 27 bc he was given the title Augustus (‘venerable’) and became in effect the first Roman emperor.
Definition of Augustus in:
- The US English dictionary