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metathesis
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metathesis
n.
change of place or condition; transposition of sounds or letters in a word (Phonology)
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Metathesis
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
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| WordNet 2.0 | Download this dictionary |
metathesis
Noun
1. a linguistic process of transposition of sounds or syllables within a word or words within a sentence
(hypernym) linguistic process
2. a chemical reaction between two compounds in which parts of each are interchanged to form two new compounds (AB+CD=AD+CB)
(synonym) double decomposition, double decomposition reaction
(hypernym) chemical reaction, reaction
(hyponym) double replacement reaction
| Webster's Revised Unabridged Dictionary (1913) | Download this dictionary |
Metathesis
(n.)
Transposition, as of the letters or syllables of a word; as, pistris for pristis; meagre for meager.
Transposition, as of the letters or syllables of a word; as, pistris for pristis; meagre for meager.
(n.)
The act, process, or result of exchange, substitution, or replacement of atoms and radicals; thus, by metathesis an acid gives up all or part of its hydrogen, takes on an equivalent amount of a metal or base, and forms a salt.
The act, process, or result of exchange, substitution, or replacement of atoms and radicals; thus, by metathesis an acid gives up all or part of its hydrogen, takes on an equivalent amount of a metal or base, and forms a salt.
(n.)
A mere change in place of a morbid substance, without removal from the body.
A mere change in place of a morbid substance, without removal from the body.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
| General Chemistry Glossary | Download this dictionary |
double displacement (double displacement reaction; double exchange; exchange; metathesis)
A double displacement or metathesis is a reaction in which two reactants trade fragments: AB + CD = AC + BD Most commonly, the fragments are ions, e. g. AgNO3(aq) + NaCl(aq) = AgCl(s) + NaNO3(aq)
