levogyrate

from The Collaborative International Dictionary of English v.0.48

Levogyrate \Le`vo*gy"rate\ (-j[imac]"r[asl]t), a. [Levo- +
   gyrate.] (Chem., Physics, Biochem.)
   Turning or twisting the plane of polarization of light
   towards the left, as levulose, levotartaric acid, etc.;
   levorotatory. [Written also {l[ae]vogyrate}.]
   [1913 Webster]