ˌirəd.əˈbiləd.ē, -rətəˈ-, lətē, -i noun
( -es )
Etymology: Latin irritabilitas, from irritabilis + -itas -ity
: the quality or state of being irritable: as
a. : quick excitability to annoyance, impatience, or anger : petulance , fretfulness
irritability of temper
showing increasing irritability as he waited
b. : abnormal excitability of an organ or part of the body (as the stomach or bladder) : heightened responsiveness
c. : the property of protoplasm and of living organisms that permits them to react to environmental changes (as by specific orientation, change of shape, or production or cessation of movement)