1. Denoting levorotation, or certain crystals or solutions capable of causing it; as a chemical prefix, usually abbreviated l- or (−). Cf.:dextrorotatory. 2. Describing any leftward or anticlockwise rotation. SYN: levogyrate, levogyrous.
* * *
le·vo·ro·ta·to·ry -'rōt-ə-.tōr-ē, -.tȯr- or le·vo·ro·ta·ry -'rōt-ə-rē or Brit lae·vo·ro·ta·to·ry or lae·vo·ro·ta·ry adj turning toward the left or counterclockwise esp rotating the plane of polarization of light to the left compare DEXTROROTATORY
* * *
le·vo·ro·ta·to·ry (le″vo-roґtə-tor″e) [levo- + rotatory] turning the plane of polarization of polarized light to the left (counterclockwise).Medical dictionary. 2011.