• WordNet 3.6
    • n metathesis a chemical reaction between two compounds in which parts of each are interchanged to form two new compounds (AB+CD=AD+CB)
    • n metathesis a linguistic process of transposition of sounds or syllables within a word or words within a sentence
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Webster's Revised Unabridged Dictionary
    • Metathesis (Med) A mere change in place of a morbid substance, without removal from the body.
    • Metathesis (Chem) 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.
    • Metathesis (Gram) Transposition, as of the letters or syllables of a word; as, pistris for pristis; meagre for meager.
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Century Dictionary and Cyclopedia
    • n metathesis In grammar, transposition, more especially of the letters, sounds, or syllables of a word, as in the case of Anglo-Saxon ācsian, ās-cian, English ax, ask; Anglo-Saxon brid, English bird.
    • n metathesis In surgery, a change in place of a morbid substance; an operation removing a morbific agent from one part to another, as in couching for cataract
    • n metathesis In logic, same as conversion.
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Chambers's Twentieth Century Dictionary
    • n Metathesis me-tath′es-is (gram.) a change of place of the letters or syllables of a word
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Webster's Revised Unabridged Dictionary
L., fr. Gr. meta`qesis, fr. metatiqe`nai to place differently, to transpose; meta` beyond, over + tiqe`nai to place, set. See Thesis
Chambers's Twentieth Century Dictionary
Gr.,—metatithenai, to transpose—meta, over, tithenai, to place.


In literature:

The Pidasa were probably Le-leges (Pedasians); the name of Pisidia may be the same, by metathesis.
"History Of Egypt, Chaldæa, Syria, Babylonia, And Assyria In The Light Of Recent Discovery" by L.W. King and H.R. Hall
Phrator is a metathesis for Phar-Tor, from Phur, ignis.
"A New System; or, an Analysis of Antient Mythology. Volume I." by Jacob Bryant
Three of the most important of these are assimilation, dissimilation, and metathesis.
"The Romance of Words (4th ed.)" by Ernest Weekley
It includes Toulmin, a metathesis of Tomlin.
"The Romance of Names" by Ernest Weekley

In news:

THE EARLY DAYS Recognizing the role of metal carbenes was key in realizing the promise of olefin metathesis .
Elevance, XiMo Demonstrate Metathesis Catalyst Viability .