Search Result for "excitability": 
Wordnet 3.0

NOUN (2)

1. excessive sensitivity of an organ or body part;
[syn: excitability, irritability]

2. being easily excited;
[syn: excitability, excitableness, volatility]

The Collaborative International Dictionary of English v.0.48:

Excitability \Ex*cit"a*bil"i*ty\, n. [Cf. F. excitabilit['e].] 1. The quality of being readily excited; proneness to be affected by exciting causes. [1913 Webster] 2. (Physiol.) The property manifested by living organisms, and the elements and tissues of which they are constituted, of responding to the action of stimulants; irritability; as, nervous excitability. [1913 Webster]
WordNet (r) 3.0 (2006):

excitability n 1: excessive sensitivity of an organ or body part [syn: excitability, irritability] 2: being easily excited [syn: excitability, excitableness, volatility]