redoxadj.n.
/ˈriːdɒks/, U.S. /ˈriˌdɑks/ Chemistry.
A. adj.
Designating a reaction in which oxidation of one reactant is coupled with reduction of another; of, relating to, or participating in such a reaction. Also: of or relating to the degree of oxidation or reduction of a chemical species, tissue, etc.Recorded earliest in redox potential n. at Compounds.
ΘΚΠ
the world > matter > chemistry > chemical reactions or processes > [noun] > chemical reactions or processes (named) > redox reaction
oxidation-reduction1899
redox1928
1928 L. Michaelis & L. B. Flexner in Jrnl. Biol. Chem. 79 689 The success met on application of the theoretical fundamentals of oxidation-reduction potentials (hereinafter to be referred to by us as ‘redox’ potentials)..to organic redox systems..has given great impetus to more elaborate study of physiological materials.
1938 Nature 15 Oct. 723/1 Increasing use of redox indicators is being made with marked success in analytical chemistry.
1959 Engineering 2 Jan. 25/2 A mercaptan modifier and redox catalyst are employed to obtain the desired molecular structure in the shortest possible reaction time.
1978 P. W. Atkins Physical Chem. xii. 362 In a redox titration a reduced form of an ion (e.g., Fe2+) is oxidized by the addition of some oxidizer (e.g., Ce4+).
1982 G. C. Hill & J. S. Holman Chem. in Context: Lab. Man. & Study Guide 17/1 Iron is..present in a number of enzymes and co-enzymes involved in redox processes in the body.
2006 Lab Business Week (Nexis) 8 Oct. 202 A recent review discusses redox regulation of cardiac calcium channels and transporters.
B. n.
A redox reaction. rare.
ΚΠ
1971 Nature 4 June 311/2 An internal redox apparently occurs, and the electron moves from cation to anion.
2005 Jrnl. Amer. Chem. Soc. 127 13036 I−/I3− and I3− redoxes were observed in the cyclic voltammogram of the I− solution.
Compounds
redox potential n. the tendency of a species to acquire electrons and thus be reduced; = electrode potential n. at electrode n. Compounds 2.
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1928Redox potentials [see sense A.].
1951 A. G. Richards Integument of Arthropods viii. 76 By some mechanism, seemingly involving redox potential, the enzyme is prevented from working until the proper time.
1993 Aquarist & Pondkeeper Oct. 28/1 (advt.) One of the most important to keep a stable environment is the redox potential (measure of the oxidizing capacity of the water).
2004 New Scientist 1 May 31/2 Chemicals that give their electrons away easily have a negative redox potential. Electron-loving chemicals have a positive redox potential.
redox reaction n. a reaction in which oxidation of one reactant is coupled with reduction of another.
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1936 Jrnl. Org. Chem. 1 314 The formation of murexide..may be explained by assuming the following reversible redox reaction.
1983 G. C. Hill & J. S. Holman Chem. in Context (ed. 2) ii. 9 Redox reactions include such diverse processes as burning, rusting and respiration.
2003 Hobart (Tasmania) Mercury (Nexis) 29 Mar. 24 During chemical reactions known as redox reactions, some chemicals lose electrons and others gain them.
redox state n. (in a redox system) the ratio of the concentration of the oxidized species to the concentration of the reduced species.
ΚΠ
1938 Science 1 July 16/2 Species specificity is an individual characteristic of the keratins employed and..the specificity observed is dependent on the redox state of the sulfhydryl groups in the protein molecule.
1967 Canad. Med. Assoc. Jrnl. 97 542/2 The animals consume only as much [alcohol] as they are able to metabolize without disturbing the hepatic redox state.
2000 Y. Hirabayashi & S. Ichikawa in M. Fukuda & O. Hindsgaul Molecular & Cellular Glycobiol. vii. 227 The intracellular redox state regulates enzyme activity.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022).
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adj.n.1928