1. instances of increasing in speed or rate
Usage: plural of acceleration
2. rates of change of velocity with respect to time
Usage: physics; plural of acceleration

Examples

• The car’s sudden accelerations made the passengers uncomfortable.
• Scientists measured the accelerations of falling objects.
• The rocket experienced multiple accelerations during launch.
• Different accelerations were recorded at various points in the experiment.
• The driver’s erratic accelerations caused concern among traffic officials.
• Physics students calculated the accelerations of rolling balls down inclined planes.