Metathesis

Look up metathesis in Wiktionary, the free dictionary.

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