Metathesis

n.	1.	(Gram.) Transposition, as of the letters or syllables of a word; as, pistris for pristis; meagre for meager.
	2.	(Med.) A mere change in place of a morbid substance, without removal from the body.
	3.	(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.

Noun	1.	metathesis - a linguistic process of transposition of sounds or syllables within a word or words within a sentence
	2.	metathesis - a chemical reaction between two compounds in which parts of each are interchanged to form two new compounds (AB+CD=AD+CB) Synonyms: double decomposition, double decomposition reaction

linguistic process