combining form of URE-A, occurring in a few words, as ureo-carbonate, -carbonic, ureometer, ureometry: (see quots. and cf. UREA, URO-1).

1

1852.  Watts, trans. Gmelin’s Handbk. Chem., VII. 377. It is resolved into alcohol and a *ureo-carbonate of the alkali. Ibid. The constituents of vinic ether and of hypothetically anhydrous *ureo-carbonic acid.

2

1876.  J. G. Blackley in Jrnl. Chem. Soc., II. 467. A modification of Russell and West’s *ureometer.

3

1884.  Knight, Dict. Mech., Suppl. 915/1. In Hüfner’s new ureometer,… the exact methods for the determination of urea in organic liquids are … complex and tedious.

4

1901.  Lancet, 9 March, 697/1. I have examined the urine with Martindale’s ureometer.

5

1876.  J. G. Blackley in Jrnl. Chem. Soc., II. 447. The operation of *ureometry.

6