[a. med. L. ūrtīcātiōn-, ūrtīcātio, n. of action f. ūrtīcāre to URTICATE. Cf. F. urtication, It. orticazione, Pg. urtic-, urtigação.]

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  1.  The action or function of uticating or stinging like or as a nettle; a stinging operation.

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1655.  Jer. Taylor, Unum Necess., V. § 3. 253. A body may be said to be lustful though it be asleep, or eating, without the sense of actual urtications and violence, by reason of its constitution.

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1858.  Lewes, Sea-side Stud., 146. Certain minute organs found in all Polypes, and variously styled ‘thread-capsules,’ ‘filiferous capsules,’ or urticating cells, are organs of urtication or stinging. Ibid., 148. Here, then, we have the organ, without any corresponding function; ‘urticating cells,’ but no urtication!

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  b.  A burning or pricking sensation suggestive of stinging with nettles.

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1859.  Huxley, Oceanic Hydrozoa, 94. The mucus which produces the well-known urtication of the human skin.

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1899.  Allbutt’s Syst. Med., VIII. 483. So that … urtication … may be excited in them [i.e., elements of a certain eruption] by mechanical irritation or heat.

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  2.  The flogging or pricking of a benumbed part or paralytic limb with green nettles, so as to restore sensation, etc.

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1837.  J. G. Millingen, Curios. Med. Exper., II. 55. A case of obstinate lethargy was cured … by repeated urtication of the whole body.

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1870.  J. G. Bertram, Flagellation, xxii. 207. Elidœus Paduanus recommends whipping with nettles, or urtication,… for assisting the development of the eruption in exanthematic diseases.

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1873.  M. Collins, Miranda, III. 206. Urtication is the best cure for rheumatism.

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