Source : Webster's Revised Unabridged Dictionary (1913)

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