(physiology) The ability of the cell to receive and respond to a stimulus.

(pathology) The excessive sensitivity of a bodily organ or part to a stimulus; undue susceptibility to the influence of a stimulus.

(general) The quality or state of being irritable.


In physiology, irritability is exhibited by certain cells, such as muscle cells, neurons, and endocrine cells.

Word origin: From Latin irritabilitas
Related forms: irritable (adjective)


See also: irritation

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