1. depending on or involving chance, luck, or random events; determined by dice or gambling
Usage: formal; often used in music and art contexts
2. relating to or denoting music or art that incorporates elements of chance or randomness in its composition or performance
Usage: music and art; 20th-century avant-garde

Examples

• The outcome of the lottery is entirely aleatoric, with no way to predict the winning numbers.
• John Cage's aleatoric compositions used dice rolls and chance operations to determine musical notes.
• The artist created an aleatoric painting by randomly dropping paint onto the canvas.
• In probability theory, aleatoric processes are governed by randomness rather than fixed rules.
• The film's plot takes an aleatoric turn when the protagonist encounters an unexpected stranger.
• Aleatoric music challenges the traditional notion that composers have complete control over their work.