levorotation
左旋
le·vo·ro·ta·tion /ˌlɪvəroˈteʃən/ 名詞
Le·vo·ro·ta·tion n. [Written also lævorotation.] Physics & Chem. Rotation in the direction of an outgoing right-handed screw; counter-clockwise rotation; -- applied chiefly to the turning of the plane of polarization of light.
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levorotation
n : rotation to the left [syn: counterclockwise rotation]
[ant: dextrorotation]