10 letters · 15 points in Scrabble
noun a linguistic process of transposition of sounds or syllables within a word or words within a sentence
noun a chemical reaction between two compounds in which parts of each are interchanged to form two new compounds (AB+CD=AD+CB)
originBorrowed from Late Latin metathesis, from Ancient Greek μετάθεσις (metáthesis), from μετά (metá, “among”) + θέσις (thésis, “placement”).
Etymology from Wiktionary, CC BY-SA 3.0