Read the dictionary definition of excitation. All definitions for this word.
1. something that agitates and arouses
1. he looked forward to the excitements of the day
2. the neural or electrical arousal of an organ or muscle or gland
3. the state of being emotionally aroused and worked up
1. his face was flushed with excitement and his hands trembled
2. he tried to calm those who were in a state of extreme inflammation