dl-
\\\\(ˌ)dē-ˈel, ˈdē-ˌ\\\\ prefix
1. also d,l- : consisting of equal amounts of the dextrorotatory and levorotatory forms of a specified compound
    dl-tartaric acid
2. consisting of equal amounts of the d- and l- forms of a specified compound
    dl-fructose

dl-
\(ˈ)dē|el\ prefix
Etymology: International Scientific Vocabulary d- + l-
1. also d,l- : consisting of equal amounts of the dextro and levo forms of a specified compound — usually printed in italic
 < dl-tartaric acid >
— compare racemic
2. : consisting of equal amounts of the d- and l- forms of a specified compound — usually printed as small capitals
 < dl-fructose >
— compare racemic