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ureo-carbonic
ureo-carbonic adj. 
/ˌjɔːrɪə(ʊ)kɑːˈbɒnɪk/,
Brit. /ˌjʊərɪə(ʊ)kɑːˈbɒnɪk/
, /ˌjʊərɪə(ʊ)kɑːˈbɒnɪk//ˌjɔːrɪə(ʊ)kɑːˈbɒnɪk/U.S. /ˌjʊrioʊˌkɑrˈbɑnɪk/
= ureo-carbonate n./ˌjʊrioʊˌkɑrˈbɑnɪk/ΚΠ
1852 H. Watts tr. L. Gmelin Hand-bk. Chem. VII. 377 The constituents of vinic ether and of hypothetically anhydrous ureo-carbonic acid.
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