| Irritability (irritability) |
|---|
| n. | (?) |
|---|
| Ir`ri*ta*bil"i*ty |
| [L.
irritabilitas: cf. F. irritabilité.]
|
The state or quality of being irritable;
quick excitability; petulance; fretfulness; as, irritability
of temper.
A natural
susceptibility, characteristic of all living organisms, tissues, and
cells, to the influence of certain stimuli, response being manifested
in a variety of ways, -- as that quality in plants by which they
exhibit motion under suitable stimulation; esp., the property which
living muscle possesses, of responding either to a direct stimulus of
its substance, or to the stimulating influence of its nerve fibers,
the response being indicated by a change of form, or contraction;
contractility.
A condition of morbid
excitability of an organ or part of the body; undue susceptibility to
the influence of stimuli. See Irritation,
n., 3.
|
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In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 