Irritable

(ir’-it-a-bl) [irritare, to irritate, to tease]. I. Reacting to stimuli. 2. Easily excited. I. Bladder, a condition of the bladder marked by constant desire to void urine. I. Heart, a peculiar condition of the heart characterized by precordial pain, dyspnea on exertion, palpitation, and irregularity of the heart’s action. 342