levorotatory
adjective
le·vo·ro·ta·to·ry ˌlē-və-ˈrō-tə-ˌtȯr-ē 
: turning toward the left or counterclockwise
specifically : rotating the plane of polarization of light to the left compare dextrorotatory
Word History
First Known Use
1864, in the meaning defined above
Medical Definition
levorotatory
adjective
le·vo·ro·ta·to·ry -ˈrōt-ə-ˌtōr-ē, -ˌtȯr-
variants or levorotary
-ˈrōt-ə-rē
or British laevorotatory or laevorotary : turning toward the left or counterclockwise
especially : rotating the plane of polarization of light to the left compare dextrorotatory
- psychopathist
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