Metathesis

The term metathesis refers to:

In phonetics / phonology the interchange of sounds, see metathesis (phonetics )
In inorganic chemistry, a reaction pairwise exchange ions in the salt, see salt metathesis
In organic chemistry, a reaction in which the Replace alkenes substructures, see alkene metathesis
In organic chemistry, a reaction in which the Replace alkynes substructures, see alkyne metathesis
In philosophy and metaphysics a fundamental overarching idea or conjecture, the metathesis (philosophy)

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