Glossary of Terms:
 
S/PDIF
1) Sony/Phillips Digital Interface Format — A standard for sending and receiving digital audio signals on consumer products RCA connectors and coaxial cable.
2) A connector which transmits/sends S/PDIF data.
3) The cable used with a S/PDIF connector.
Source: Recording Institute of Detroit

Also refered as:
  IEC60958   Sony/Phillips Digital Interface Format
Related terms:
  AES/EBU   digital