1. the state of being excited or stimulated; arousal of activity or energy
2. the process of applying energy to cause a system or particle to move to a higher energy state
Usage: physics; chemistry
3. the act of exciting or the condition of being excited

Examples

• The excitation of the crowd was evident as the team scored the winning goal.
• The scientist studied the excitation of electrons in the laboratory.
• Caffeine causes excitation of the nervous system.
• The excitation energy required to move the atom to a higher state was measured.
• Her excitation about the upcoming trip was contagious.
• The excitation of the molecules increased with temperature.
• The drug’s excitation effects lasted for several hours.