01 a. Capable of being irritated.
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1.
Capable of being irritated.
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2.
Very susceptible of anger or passion; easily inflamed or exasperated; as, an irritable temper.“Vicious, old, and irritable.” — Tennyson.
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3.
Endowed with irritability; susceptible of irritation; capable of being excited to action by the application of certain stimuli.(Physiol.)
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4.
Susceptible of irritation; unduly sensitive to irritants or stimuli. See Irritation, n., 3.(Med.) See: Irritation