Metathesis in a sentence as a noun

In the US we can credit Noah Webster for having us drop the unpronounced "u" in "colour" or write "centre" with the kind-of-metathesis spelled out.

Metathesis definitions

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)