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Definition of d-

d-: Abbreviation for dextrorotatory, applied to a chemical compound. Dextrorotary is opposed to levorotary which is abbreviated as l-. From the Latin dexter, on the right-hand side.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=25287
Last Editorial Review: 10/9/2012

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