Metathesis Definition

mĭ-tăthĭ-sĭs
metatheses
noun
metatheses
Transposition or interchange.
Webster's New World
Transposition within a word of letters, sounds, or syllables, as in the change from Old English brid to modern English bird or in the confusion of modren for modern.
American Heritage
Double displacement.
American Heritage

(inorganic chemistry) The double decomposition of inorganic salts.

Wiktionary

(organic chemistry) The breaking and reforming of double bonds in olefins in which substituent groups are swapped.

Wiktionary
Synonyms:

Other Word Forms of Metathesis

Noun

Singular:
metathesis
Plural:
metatheses

Origin of Metathesis

  • Late Latin from Greek from metatithenai to transpose meta- meta- tithenai to place dhē- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Late Latin metathesis, from Ancient Greek μετάθεσις (metáthesis), from μετά (meta, “among") + θέσις (thesis, “placement").

    From Wiktionary

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