The Collaborative International Dictionary
Racemic \Ra*ce"mic\ (r[.a]*s[=e]"m[i^]k), a. [Cf. F.
rac['e]mique. See Raceme.] (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.
--Gregory.
Wiktionary
a. (context chemistry English) containing equal amounts of dextrorotatory (D) and levorotatory (L) stereoisomers and therefore not being optically active; typically, will be synthetic rather than natural
WordNet
Wikipedia
Usage examples of "racemic".
Amphetamines are broken down chemically into three types: salts of racemic amphetamines, dextroamphetamines, and methamphetamines, which only differ in potencies.
Acid hydrolysis yields an array of racemic amino acids, both biological and non-biological, plus much urea.