dextrorotatory

Dextrorotation is the property of rotating plane polarized light clockwise. Laevorotation is the opposite of dextrorotation.Compounds with these properties are said to have optical activity and consist of chiral molecules. Chiral centers that have opposite configurations rotate polarized light the same number of degrees, but in opposite directions. If one molecule that has a chiral center with an "R" configuration rotates plane polarized light 25 degrees clockwise, its enantiomer with the corresponding chiral center having the "S" configuration will rotate plane polarized light 25 degrees counter-clockwise. However it is not possible to determine whether any chiral center will be laevorotatory or dextrorotatory directly from its configuration. Enantiomers have equal and opposite optical rotation, but both "R" and "S" stereocenters have the ability to be dextrorotatory or laevorotatory.
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En chimie, une molécule lévogyre (« qui tourne à gauche », du latin laevus, gauche) a la propriété de faire dévier le plan de polarisation de la lumière polarisée vers la gauche d'un observateur qui reçoit la lumière. (Plus précisément, l'observateur en question voit le plan tourner dans le sens contraire à celui des aiguilles d'une montre.)
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右向旋转的 右旋性 右旋的；右旋物

dextrorotatory
\dex`tro*ro"ta*to*ry\ (?), a. [dextro- + rotatory.] (chem. & opt.) turning, or causing to turn, toward the right hand; esp., turning the plane of polarization of luminous rays toward the right hand; as, dextrorotatory crystals, sugars, etc. cf. levorotatory. [
dextrorotatory
adj : rotating to the right [syn: dextrorotary, right-handed]