1. the action of spreading and promoting an idea, theory, or belief
2. the breeding of plants or animals to produce offspring
Usage: biology
3. the transmission of sound, light, or other waves through a medium
Usage: physics

Examples

• The propagation of false information on social media is a growing concern.
• Religious missionaries focused on the propagation of their faith.
• The propagation of roses requires careful attention to soil conditions.
• Scientists studied the propagation of bacteria in the laboratory.
• Sound propagation underwater follows different rules than in air.
• The propagation of radio waves can be affected by atmospheric conditions.
• Plant propagation through cuttings is often more reliable than seeds.