1. the maximum extent of a vibration or oscillation, measured from the position of equilibrium
Usage: physics
2. largeness or fullness of extent or size; breadth
Usage: formal

Examples

• The amplitude of the sound wave determines how loud we perceive it to be.
• Scientists measured the amplitude of the earthquake’s seismic waves.
• The pendulum’s amplitude decreased as friction slowed its motion.
• The radio signal’s amplitude was too weak to receive clearly.
• The amplitude of her voice filled the entire auditorium.
• We were impressed by the amplitude of his knowledge on the subject.