a. [f. URE-A + -AL.] Of or pertaining to, of the nature of, urea; characterized by excessive area.
1848. Dunglison, Med. Lex. (ed. 7), 266/1. D[iabetes] Ureal.
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.
1891. Cent. Dict., s.v., A ureal solution.