D defs.my
Entry 3 senses Webster, 1913

Metathesis

· Me·tath·e·sis · IPA /məˈtæ.θə.sɪs/
01 n. Transposition, as of the letters or syllables of a word; as, pistris for pristis; meagre for meager.
pl. Metatheses
  1. 1.
    Transposition, as of the letters or syllables of a word; as, pistris for pristis; meagre for meager.(Gram.)
  2. 2.
    A mere change in place of a morbid substance, without removal from the body.(Med.)
  3. 3.
    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.(Chem.)