- easily excited
- capable of responding to stimuli
- (excitability) excessive sensitivity of an organ or body part
- (excitability) The state of being excitable; A measure of how easy something is to excite
- (Excitability) The ability to generate action potentials.
- (excitability) the disposition of a tissue or living cell to respond to a stimulus or change in the environment.
- The potential of a structure to produce waves. Even if no waves are present, the potential to produce them makes the structure excitable. A liquid surface with wind blowing over it is excitable, it is capable of producing waves. The surface structures of eukaryotic cells are also excitable.