a rotation to the right; clockwise rotation, esp of the plane of polarization of plane-polarized light passing through a crystal, liquid, or solution, as seen by an observer facing the oncoming light
Compare laevorotation
Derived forms
dextrorotatory (ˌdɛkstrəʊˈrəʊtətərɪ, -trɪ) or dextrorotary (ˌdextroˈrotary)