RDD
Marketing.
1.
random digit dialing.
Read Also:
- RDF
1. . Resource Description Framework radio direction finder
- Rdfs
ratio of decayed and filled surfaces
- Rdft
ratio of decayed and filled teeth
- Rdg
Ridge (in postal abbreviations)
- Rdh
RDH abbr. Registered Dental Hygienist Received in the Senate Registered Dental Hygienist