a. Chem. Also 8–9 ouric. [a. F. urique, f. ur-ine URINE sb.1: see -IC 1 b.]

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  1.  Uric oxide: (see quot. 1860).

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1797.  Pearson, in Phil. Trans., LXXXVIII. 37. It will be necessary to give a name to this urinary animal oxide…. I trust that philological critics will find the name ouric or uric oxide perfectly appropriate.

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1803.  Fessenden, Poet. Petition, 12. Such a man … May view this uric oxyd’s basis, And tell exactly what the case is.

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1844.  Lancet, 19 Oct., 129/1. It is clear that uric oxide differs from uric acid simply in containing two atoms less of oxygen.

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1860.  Mayne, Expos. Lex., 1314. Uric Oxide,… a substance constituting a very rare ingredient in vesical calculi, and otherwise termed urous oxide, and xanthic oxide.

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  2.  Uric acid, a crystallizable acid, C5H4N4O3, found in the urine of man, certain animals, reptiles, and birds, being produced in the metabolism of nitrogenous bodies, and excreted by the kidneys.

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1800.  trans. Lagrange’s Chem., II. 404. To separate the uric acid from the latter salts.

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1803–.  [see LITHIC a. 1].

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1826.  Henry, Elem. Chem., II. 467. It is in those organs … that a new acid, the uric, is generated.

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1872.  Huxley, Physiol., V. 106. Urea and uric acid are both composed of the elements carbon, hydrogen, oxygen, and nitrogen.

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  ellipt. (and attrib.).  1822.  Good, Study Med., IV. 508. The uric calculi … are of a yellowish or reddish-brown colour.

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1846.  G. E. Day, trans. Simon’s Anim. Chem., II. 460. One minute calculus passed at the same time with others of pure uric, had a nucleus of oxalate of lime.

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  b.  attrib. and Comb., as uric acid calculus, diathesis, -excreting, excretion, gravel, etc.

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1819.  Rees’ Cycl., XXXVII. 3 X/2. Lithic or Uric Acid Calculus.

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1843.  Penny Cycl., XXVI. 52/1. Uric Acid Crystals.

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1845.  Encycl. Metrop., VII. 552. A gouty or rheumatic state of the constitution, or uric acid diathesis.

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1864.  Garrod, Mat. Med. (ed. 2), 108. In cases of uric acid gravel.

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1866.  Odling, Anim. Chem., 128. The uric acid group of compounds.

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1880.  Encycl. Brit., XI. 7/2. The uric-acid-excreting function of the kidneys.

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  c.  Uric-acidæmia, = URICÆMIA; uric-acidity, the condition of containing an excess of uric acid.

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1893.  Brit. Med. Jrnl., Suppl. 26 Aug., 33. Nervous conditions depending upon *uric acidæmia.

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1897.  Lancet, 15 May, 1338/2. Symptoms … which would seem to depend upon uricacidæmia.

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1893.  A. S. Eccles, Sciatica, 30. The *uric-acidity of the blood and tissues.

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