Main Entry: ir·ri·ta·bil·i·ty

Pronunciation: \ˌir-ə-tə-ˈbi-lə-tē\

Function: noun

Inflected Form(s): plural ir·ri·ta·bil·i·ties

Date: 1755

1 : the property of protoplasm and of living organisms that permits them to react to stimuli
2 : the quality or state of being irritable: as a : quick excitability to annoyance, impatience, or anger : petulance b : abnormal or excessive excitability of an organ or part of the body