Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Of or relating to a chemical mixture that contains equal quantities of dextrorotatory and levorotatory forms of a compound and therefore does not rotate the plane of incident polarized light.
from The Century Dictionary.
- Pertaining or relating to grapes in clusters, or to racemes.
- In chem., composed of two optically opposite isomeres. The typical case is that of racemic acid (see below), but racemic forms are of frequent occurrence among organic compounds. The racemic form does not act on polarized light.
from the GNU version of the Collaborative International Dictionary of English.
- adjective (Chem.) Pertaining to, or designating, an acid found in many kinds of grapes. It is also obtained from tartaric acid, with which it is isomeric, and from sugar, gum, etc., by oxidation. It is a sour white crystalline substance, consisting of a combination of dextrorotatory and levorotatory tartaric acids.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective chemistry containing equal amounts of
dextrorotatory (D) andlevorotatory (L)stereoisomers and therefore not beingoptically active ; typically, will besynthetic rather thannatural
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Support
Help support Wordnik (and make this page ad-free) by adopting the word racemic.
Examples
-
Rebecca arrives in less than a minute and asks the nurses to get a racemic epinephrine neb.
Between Expectations Md Meghan Maclean Weir 2011
-
Resting on a wooden dais throughout the ceremony, the synthetic psychostimulant was warmly praised by Harvard president Drew Faust, who called Adderall a stirring testament to what the human mind can achieve when chemically altered by a combination of dextroamphetamine and racemic DL-amphetamine salts.
-
Rebecca arrives in less than a minute and asks the nurses to get a racemic epinephrine neb.
Between Expectations Md Meghan Maclean Weir 2011
-
Since random samples from natural and artificial (Urey-Miller) have racemic yields.
-
Resting on a wooden dais throughout the ceremony, the synthetic psychostimulant was warmly praised by Harvard president Drew Faust, who called Adderall a stirring testament to what the human mind can achieve when chemically altered by a combination of dextroamphetamine and racemic DL-amphetamine salts.
-
As observed in all consequent experiments, both left-handed (L) and right-handed (D) optical isomers were created in a racemic mixture
Ambiguity Tolerance 2008
-
Crystallography volunteers enantiomorphic space groups P3 (1) 21 and P3 (2) 21 with respective all right-handed and all left-handed 3-fold screw axies, no racemic screw axes, no conflicting screw axes.
-
When switching dosage forms, if the prescriber does not obtain the desired therapeutic endpoint in spite of education about the extensive differences in inhalers, there are alternatives - use of a spacer, increased dose causing more side effects or switching to Xopenex, the R- enantiomer which is the active portion of the racemic albuterol.
I Called It: The Ozone May Not Be Falling, but Something is About to Hit the Fan 1 Dinosaur 2009
-
The 2 enantiomers of racemic tramadol function in a complementary manner to enhance the analgesic efficacy and improve the tolerability profile of tramadol.
MTV And MySpace Team Up For Online Forum ��� With Focus Group Technology 2009
-
Nexium is only the S-enantiomer; Prilosec is a racemic mixture.
Purple Isn't Green 1 Dinosaur 2008
Comments
Log in or sign up to get involved in the conversation. It's quick and easy.