from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A counterclockwise rotation, especially of the plane of polarized light.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Rotation in an anticlockwise direction, especially such rotation of the plane of polarized light.
from the GNU version of the Collaborative International Dictionary of English
- n. Rotation in the direction of an outgoing right-handed screw; counter-clockwise rotation; -- applied chiefly to the turning of the plane of polarization of light.
from The Century Dictionary and Cyclopedia
- The rotation of the plane of polarization of light toward the left.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. rotation to the left
From levo- + rotation (Wiktionary)