左旋的
Levorotatory \Le`vo*ro"ta*to*ry\ (-r[=o]"t[.a]*t[-o]*r[y^]), a. [Levo- + rotatory.] (Chem. & Physics) Turning or rotating the plane of polarization towards the left; levogyrate, as levulose, left-handed quartz crystals, etc. [Written also {l[ae]vorotatory}.]
levorotatory adj : rotating to the left [syn: {levorotary}, {left-handed}]