dextrorotatory

[dek-stroh-roh-tuh-tawr-ee, -tohr-ee] /ˌdɛk stroʊˈroʊ təˌtɔr i, -ˌtoʊr i/
adjective, Optics.
1.
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, dextrorotary
[dek-stroh-roh-tuh-ree] /ˌdɛk stroʊˈroʊ tə ri/ (Show IPA).
Origin
1875-80; dextro- + rotatory
Related forms
dextrorotation
[dek-stroh-roh-tey-shuh n] /ˌdɛk stroʊ roʊˈteɪ ʃən/ (Show IPA), noun
dextrorotatory in Medicine

dextrorotatory dex·tro·ro·ta·to·ry (děk'strə-rō'tə-tôr'ē) or dex·tro·ro·ta·ry (-rō'tə-rē)
adj.
Turning or rotating the plane of polarization of light to the right or clockwise, as for solutions or isomers, usually designated as d- in chemical names.

dextrorotatory in Science
dextrorotatory
  (děk'strə-rō'tə-tôr'ē)   
Relating to a substance that causes dextrorotation.