Definition of "dextrorotatory" [dex•tro•ro•ta•to•ry]

• Of or relating to an optically active chemical that rotates the plane of polarized light to the right, or clockwise: a dextrorotatory solution. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Fortunately, they have the “Fly over” population to keep things in a dextrorotatory lean."
• "Oil from the wild roots of North India is said to be highly levorotatory (rotates the plane of polarized light to the left), whereas that from the cultivated roots from South India is dextrorotatory (rotates polarized light to the right)."
• "It was found chemically that cane sugar absorbs the elements of water and changes into a mixture of two different sugars, one being weakly dextrorotatory and the other strongly laevorotatory, hence the resultant is a rotation to the left."