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 (lē′və-rō′tə-tôr′ē) also le·vo·ro·ta·ry (-tə-rē)
adj. Symbol l-
Of or relating to an optically active substance that rotates the plane of polarized light to the left, or counterclockwise (when looking toward the light source): Only levorotatory amino acids are biologically active.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌli vəˈroʊ təˌtɔr i, -ˌtoʊr i)

also le•vo•ro•ta•ry

(-ˈroʊ tə ri)

turning to the left, esp. rotating to the left of the plane of polarization of light: levorotatory crystals. Symbol: l-
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.levorotatory - rotating to the left
anticlockwise, contraclockwise, counterclockwise - in the direction opposite to the rotation of the hands of a clock
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