irritability

In pathology, morbid responsiveness to stimuli.

The quality of being irritable; an irritable state or condition of the mind; proneness to mental irritation; irascibility; petulance: as, irritability of temper.

In physiology, the property of nerve, muscle, or other active tissue of reacting upon stimuli; in muscles, specifically, the property of contracting when stimulated.

In botany, that endowment of a vegetable organism by virtue of which a motion takes place in it in response to an external stimulus.

The state or quality of being irritable; quick excitability; petulance; fretfulness.

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 possesses, 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.

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

The state or quality of being irritable; quick excitability; petulance; fretfulness; as, irritability of temper.

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.

A condition of morbid excitability of an organ or part of the body; undue susceptibility to the influence of stimuli.