Real dielectric constant Soil reponse of a reflected standing electromagnetic wave of a particular frequency which is related to the stored energy within the medium. This is the real portion of the complex dielectric constant. Originally from the CUAHSI HIS VariableNameCV. See: http://his.cuahsi.org/mastercvreg/edit_cv11.aspx?tbl=VariableNameCV. ODM2 Variable Name Controlled Vocabulary ODM2 Working Group A vocabulary for describing the name of Variables.