Webster 1913 Edition
irritabilis: cf. F.
Capable of being irritated.
Very susceptible of anger or passion; easily inflamed or exasperated;
Vicious, old, and
Endowed with irritability; susceptible of irritation; capable of being excited to action by the application of certain stimuli.
Syn. – Excitable; irascible; touchy; fretful; peevish.
Webster 1828 Edition
1.Very susceptible of anger or passion; easily inflamed or exasperated; as an irritable temper.
2.In physiology, susceptible of contraction, in consequence of the appulse of an external body.
In general, there is nothing irritable in the animal body, but the muscular fibers.