Definition of irritation in English:


Line breaks: ir¦ri|ta¦tion
Pronunciation: /ɪrɪˈteɪʃn


[mass noun]
  • 2Inflammation or other discomfort in a body part caused by reaction to an irritant substance: some chemicals cause a direct irritation to the skin leading to dermatitis
    More example sentences
    • Metaplastic changes are common lesions and occur in reaction to foreign substances or chronic irritation.
    • Endoscopy allows doctors to check for irritation, ulcers, inflammation and abnormal tissue growth in the internal organs.
    • Mosquito bites cause severe skin irritation through an allergic reaction to the insects' saliva.
  • 2.1 Biology The stimulation of an organism, cell, or organ to produce an active response.
    More example sentences
    • It has been shown that the mouse model has a predictive value for human responses to sensory irritation.
    • Initially, cellular growth increases markedly in an effort to regenerate tissue in response to irritation.


late Middle English: from Latin irritatio(n-), from the verb irritare (see irritate).

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