The American Heritage® Dictionary of the English Language, 4th Edition
adj. Of or relating to an optically active chemical that rotates the plane of polarized light to the left, or counterclockwise: Only levorotatory amino acids are biologically active.
adj. That rotates the plane of polarized light to the left, or anticlockwise.
the GNU version of the Collaborative International Dictionary of English
adj. Turning or rotating the plane of polarization of light towards the left; -- applied to crystals and compounds exhibiting optical activity, such as levulose, left-handed quartz crystals, etc. Opposite of dextrorotatory.
The Century Dictionary and Cyclopedia
Same as levogyrate.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. rotating to the left
Word Usage
"“At the molecular level, it would appear to be a levorotatory form of the Gnawing bacillus,” Selar began."