3. (Med.)
Defn: A condition of morbid excitability of an organ or part of the body; undue susceptibility to the influence of stimuli. See Irritation, n., 3.
IRRITABLE
Ir"ri*ta*ble, a. Etym: [L. irritabilis: cf. F. irritable. See
Irritate.]
1. Capable of being irriated.
2. Very susceptible of anger or passion; easily inflamed or exasperated; as, an irritable temper. Vicious, old, and irritable. Tennyson.
3. (Physiol.)
Defn: Endowed with irritability; susceptible of irritation; capable of being excited to action by the application of certain stimuli.
4. (Med.)
Defn: Susceptible of irritation; unduly sensitive to irritants or stimuli. See Irritation, n., 3.
Syn.
— Excitable; irascible; touchy; fretful; peevish.