2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Irritation \Ir'ri*ta"tion\, noun [L. irritatio: cf. F. irritation.]

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.

From WordNet (r) 3.0 (2006) [wn]:



1: the psychological state of being irritated or annoyed [syn: {irritation}, {annoyance}, {vexation}, {botheration}]

2: a sudden outburst of anger; "his temper sparked like damp firewood" [syn: {pique}, {temper}, {irritation}]

3: (pathology) abnormal sensitivity to stimulation; "any food produced irritation of the stomach"

4: the neural or electrical arousal of an organ or muscle or gland [syn: {excitation}, {innervation}, {irritation}]

5: an uncomfortable feeling of mental painfulness or distress [syn: {discomfort}, {soreness}, {irritation}]

6: unfriendly behavior that causes anger or resentment [syn: {aggravation}, {irritation}, {provocation}]

7: the act of troubling or annoying someone [syn: {annoyance}, {annoying}, {irritation}, {vexation}]

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Monday, March 30, 2015 12:52:40 PM Coordinated Universal Time (UTC)