excitation in WordNet English dictionary

1. something that agitates and arouses
   "he looked forward to the excitements of the day"
   excitation  excitement 
   
2. the neural or electrical arousal of an organ or muscle or gland
   excitation  innervation  irritation 
   
3. the state of being emotionally aroused and worked up
   "his face was flushed with excitement and his hands trembled"; "he tried to calm those who were in a state of extreme inflammation"
   excitement  excitation  inflammation  fervor  fervour