1899 Trade Marks Jrnl. 24 May 626 Oxo... Fluid beef. Liebig's Extract of Meat Company, Limited,..London,..and..Antwerp; manufacturers of Liebig Company's extract of meat, and manufacturers, shippers, and importers of South American produce.

1905 Car 24 May p. viii/1 A 4 oz. bottle of Oxo, and a few biscuits.

1914 D. O. Barnett Let. 6 Nov. in In Happy Memory (1915) 4 Chocolate would be very welcome, also Oxo tablets.

1936 E. M. Anderson Pract. Camp Cookery 84 Use Oxo, relish, etc., if required, and season to taste.

1975 ‘C. Fremlin’ Long Shadow i. 10 Popping in with cups of tepid Oxo.

1992 Dogs Today Dec. 13/2 Crumble the Oxo cube into this and add liver powder, garlic, egg, water and oil.

1921 Jrnl. Chem. Soc. 119 1657 This is the value of the factor for the oxo-linking, O.

1934 Jrnl. Amer. Chem. Soc. 56 795/1 Ol compounds readily change to oxo compounds upon heating their solutions.

1962 J. R. Leach tr. A. A. Grinberg Introd. Chem. Complex Compounds ix. 266 The acid-base equilibria can..be complicated by the formation of polynuclear complexes with ‘ol’ bridges, or with ‘oxo’ bridges.

1974 D. Nicholls Inorg. Complexes iii. 26 The new ion species has oxo bridges and the process of its formation is known as oxolation.

1935 H. J. Lucas Org. Chem. xxxix. 514 If the oxo group is on the end of a carbon chain, the compound is an aldehyde acid.

1965 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. I. xiv. 523 Oxyacids are sometimes called oxo-acids to stress the fact that they contain XO groups in their structures.

1969 H. T. Evans tr. G. Hägg Gen. & Inorg. Chem. xxi. 500 Charged oxide molecules, that is oxo ions, should also be considered as oxides.

1971 Nomencl. Org. Chem. (I.U.P.A.C.) (ed. 3) C. 120 Trivial names for oxo carboxylic acids..may be used for the acyclic component.

1972 F. A. Cotton & G. Wilkinson Adv. Inorg. Chem. (ed. 3) xxi. 639 Many of the most important ligands having oxygen donor atoms are oxo anions, such as NO₂⁻, NO₃⁻, SO₄²⁻ and ClO₄⁻.

1984 N. N. Greenwood & A. Earnshaw Chem. of Elements (1986) vi. 162 The high affinity for oxygen is another dominant characteristic which forms the basis of the extensive chemistry of borates and related oxo complexes.

1945 H. M. Weir Oxo Process for Alcohol Manuf. from Olefins (T.A.C. Rep.) 2 The oxo process is a two-stage process for producing alcohols from olefins, first, treating the mixture of olefins with carbon monoxide and hydrogen to form aldehydes, and second, reducing them by the use of commercial hydrogen.

1947 Chem. & Industry 1 Feb. 73/2 The OXO reaction is one of general applicability to compounds containing the ethylenic double bond.

1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) VI. 543/1 Cobalt catalysts are universally used for the Oxo reaction.

1971 Nature 20 Aug. 537/1 Roden..discovered the oxo or hydroformylation reaction which generates aldehydes and alcohols from olefins, carbon monoxide, and hydrogen in the presence of cobalt catalysts.

1989 Hydrocarbon Processing Nov. 97/1 By stripping..the oxo product with fresh syngas the unconverted propylene is removed from the product and recycled to the oxo reactor.