Definition of mutarotation in US English:

mutarotation

noun

Chemistry
  • The change of optical activity with time exhibited by solutions of certain compounds, especially sugars, after being prepared; an instance of this.

Origin

Late 19th century; earliest use found in Thomas Lowry (1874–1936), physical chemist. From muta- + rotation, as alternative to slightly earlier multirotation.

Pronunciation

mutarotation

/mjuːtərə(ʊ)ˈteɪʃn/