Metathesis

Metathesis may refer to:

Changes of vocal properties

 * Metathesis (linguistics), alteration of the order of phonemes within a word
 * Quantitative metathesis, exchange of long and short roles, without changing order of vowel sounds

Chemical change in which a pair of molecules exchange electronic patterns of bonding

 * Salt metathesis reaction, exchange of bonds between two reacting chemical species
 * Olefin metathesis, redistribution of olefinic (alkene) chemical bonds
 * Alkane metathesis, redistribution of alkane chemical bonds
 * Alkyne metathesis, redistribution of alkyne chemical bonds