1. anxiety or mental uneasiness; disturbance of mind
2. the action of disturbing something or the state of being disturbed
3. a deviation of a system from its normal or regular state
Usage: scientific

Examples

• The unexpected news caused great perturbation among the staff.
• She tried to hide her perturbation during the interview.
• The perturbation of the ecosystem affected local wildlife.
• Any perturbation to the delicate balance could be dangerous.
• The scientist studied the perturbation in the satellite’s orbit.
• His calm demeanor showed no sign of perturbation despite the chaos.
• The perturbation of the water’s surface revealed the fish below.