| Acronym | Definition |
|---|
| SDNR➣Super Digital Noise Reduction |
| SDNR➣signal difference to noise ratio |
| SDNR➣San Diego Northern Railway |
| SDNR➣Screw Down Non-Return (valve) |
| SDNR➣Status, Data Not Ready (Alcatel) |
| SDNR➣Scientific Domain Names Root |
| SDNR➣Scientific Domain Names Registry |
| SDNR➣Sex, Drugs and Rock 'n' Roll |