Definitions for: Irritability


[n] a disposition to exhibit uncontrolled anger; "his temper was well known to all his employees"
[n] excessive sensitivity of an organ or body part
[n] an irritable petulant feeling



Webster (1913) Definition: Ir`ri*ta*bil"i*ty, n. [L. irritabilitas: cf. F.
irritabilit['e].]
1. The state or quality of being irritable; quick
excitability; petulance; fretfulness; as, irritability of
temper.

2. (Physiol.) A natural susceptibility, characteristic of all
living organisms, tissues, and cells, to the influence of
certain stimuli, response being manifested in a variety of
ways, -- as that quality in plants by which they exhibit
motion under suitable stimulation; esp., the property
which living muscle processes, of responding either to a
direct stimulus of its substance, or to the stimulating
influence of its nerve fibers, the response being
indicated by a change of form, or contraction;
contractility.

3. (Med.) A condition of morbid excitability of an organ or
part of the body; undue susceptibility to the influence of
stimuli. See Irritation, n., 3.

Synonyms: biliousness, choler, crossness, excitability, fretfulness, fussiness, peevishness, peevishness, pettishness, petulance, snappishness, surliness, temper

See Also: ill humor, ill humour, ill nature, pet, querulousness, reactivity, responsiveness, testiness, tetchiness, touchiness

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