Metathesis (from the Greek μετάθεσις "transposition") may refer to:

  • Metathesis (linguistics), in phonology, a sound change that alters the order of phonemes in a word
    • Quantitative metathesis, a situation in which two vowel sounds follow directly one after the other and a transposition of vowel length takes place
  • Metathesis reaction, in chemistry, a bimolecular process involving the exchange of bonds between the two reacting chemical species
    • Olefin metathesis, an organic reaction which involves redistribution of olefinic (alkene) bonds
    • Alkane metathesis, a chemical reaction in which alkanes are rearranged to give longer or shorter alkane products
    • Alkyne metathesis, an organic reaction involving the redistribution of alkyne chemical bonds

Other articles related to "metathesis":

Enyne Metathesis
... An Enyne metathesis is an organic reaction taking place between an alkyne and an alkene with a metal carbene catalyst forming a butadiene ... This reaction is a variation of olefin metathesis ... is intramolecular (in an enyne) it is called ring-closing enyne metathesis or RCEYM (scheme 2) with Y representing oxygen or nitrogen and n an integer ...
Classes of Metallacycles - Metallacyclobutanes
... Metallacyclobutane intermediates are involved in the alkene metathesis and in the oligomerization and dimerization of ethylene ... In alkene metathesis, the Chauvin mechanism invokes the attack of an alkene at an electrophilic metal carbene catalyst ... This work helped to validate the Chauvin mechanism for olefin metathesis ...
Ring Opening Metathesis Polymerisation
... Ring-opening metathesis polymerization (ROMP) is a type of olefin metathesis chain-growth polymerization that produces industrially important products ...
Lampung Languages - Phonology - Metathesis
... Metathesis seems to have been a fairly common process in Lampungic ... sets can be counted at least twenty lexemes in which metathesis occurred in one or more of the Lampungic isolects ...