Definitions for: Irritation

[n] the act of troubling or annoying someone
[n] unfriendly behavior that causes anger or resentment
[n] an uncomfortable feeling in some part of the body
[n] a sudden outburst of anger; "his temper sparked like damp firewood"
[n] the neural or electrical arousal of an organ or muscle or gland
[n] the psychological state of being irritated or annoyed
[n] (pathology) abnormal sensitivity to stimulation; "any food produced irritation of the stomach"

Webster (1913) Definition: Ir`ri*ta"tion, n. [L. irritatio: cf. F.
1. The act of irritating, or exciting, or the state of being
irritated; excitement; stimulation, usually of an undue
and uncomfortable kind; especially, excitement of anger or
passion; provocation; annoyance; anger.

The whole body of the arts and sciences composes one
vast machinery for the irritation and development of
the human intellect. --De Quincey.

2. (Physiol.) The act of exciting, or the condition of being
excited to action, by stimulation; -- as, the condition of
an organ of sense, when its nerve is affected by some
external body; esp., the act of exciting muscle fibers to
contraction, by artificial stimulation; as, the irritation
of a motor nerve by electricity; also, the condition of a
muscle and nerve, under such stimulation.

3. (Med.) A condition of morbid excitability or
oversensitiveness of an organ or part of the body; a state
in which the application of ordinary stimuli produces pain
or excessive or vitiated action.

Synonyms: aggravation, annoyance, annoyance, annoying, botheration, discomfort, excitation, innervation, pique, provocation, soreness, temper, vexation, vexation

See Also: abnormal condition, abnormalcy, abnormality, aggression, aggro, annoyance, arousal, bummer, chafe, exasperation, huff, hurt, impatience, last straw, mental state, miff, mistreatment, pinprick, psychological state, red flag, restlessness, seeing red, sensitisation, sensitization, snit, suffering, taunt, taunting, twit, vexation

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