dextrorotation

UK: /ˌdɛkstrəʊrəʊˈteɪʃən/

Collins Concise English Dictionary © HarperCollins Publishers::

dextrorotation / ˌdɛkstrəʊrəʊˈteɪʃən/ noun

1. 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

dextrorotatory / ˌdɛkstrəʊˈrəʊtətərɪ -trɪ/, ˌdextroˈrotary adjective

WordReference Random House Unabridged Dictionary of American English © 2025

dex•tro•ro•ta•to•ry  (dek′strō rō′tə tôr′ē, -tōr′ē), adj. [Optics.]

1. Optics turning to the right, as the rotation to the right of the plane of polarization of light in certain crystals and the like. Symbol: d-

Also, dex•tro•ro•ta•ry  (dek′strō rō′tə rē). 

• 1875–80; dextro- + rotatory

dex•tro•ro•ta•tion  (dek′strō rō tā′shən), n.