a. [f. URE-A + -AL.] Of or pertaining to, of the nature of, urea; characterized by excessive area.

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1848.  Dunglison, Med. Lex. (ed. 7), 266/1. D[iabetes] Ureal.

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1864.  E. A. Parkes, Pract. Hygiene, 154. With no excess of ureal excretion. Ibid. (1869), (ed. 3), 340. The formation of ammonium carbonate from ureal decomposition.

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1891.  Cent. Dict., s.v., A ureal solution.

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