Oxidation definition

ŏksĭ-dāshən
The process of increasing the positive valence or of decreasing the negative valence of an element or ion.
noun
14
6
A reaction in which the atoms of an element lose electrons and the valence of the element is correspondingly increased.
noun
11
5
A chemical reaction in which an atom or ion loses electrons, thus undergoing an increase in valence. Removing an electron from an iron atom having a valence of +2 changes the valence to +3.
9
5
The combination of a substance with oxygen.
noun
4
0
Any process in which oxygen combines with an element or substance, either slowly, as in the rusting of iron, or rapidly, as in the burning of wood.
noun
7
4
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Oxidation is the process when oxygen combines with an element, changing the appearance of the element.

When iron reacts with oxygen and changes to rust, this is an example of oxidation.

When fire burns up a wooden log, this is an example of oxidation.

noun
2
1
(chemistry) A reaction in which the atoms of an element lose electrons and the oxidation state of the element increases.
noun
1
1
The process by which electrons are removed from atoms or ions.
noun
3
4
The chemical combination of a substance with oxygen.
2
3
The combination of a substance with oxygen.
noun
2
5
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Other Word Forms

Noun

Singular:
oxidation
Plural:
oxidations

Origin of oxidation

  • French from oxider to oxidize from oxide oxide oxide

    From American Heritage Dictionary of the English Language, 5th Edition