Prefix (in small capital letters) denoting a substance consisting of equal quantities of the two enantiomorphs, d and l; replaces the older dl- as a more exact definition of structure.
* * *
dl- prefix
1) also d,l- consisting of equal amounts of the dextrorotatory and levorotatory forms of a specified compound usu. printed in italic <dl-tartaric acid> compare RACEMIC
2) consisting of equal amounts of the d- and, l- forms of a specified compound usu. printed as small capitals <dl-fructose> compare RACEMIC
* * *
chemical prefix (small capital D and L) used with the D and L convention to indicate a racemic mixture of enantiomers.Medical dictionary. 2011.