SDR explained

SDR may refer to:

Science and technology

ETSI Satellite Digital Radio
Selective dorsal rhizotomy, a neurosurgery
Short-chain dehydrogenase, short-chain dehydrogenases/reductases family, SDR family
Single data rate, in synchronous dynamic random-access memory (SDRAM)
SmartDraw image file format, with file extension .sdr
Software-defined radio, enabling computers to tune a wide spectrum of radio frequencies, using software instead of hardware for modulation and demodulation
Sony Dream Robot, later dubbed QRIO
Sparse distributed representation, in machine intelligence
Standard dimension ratio in pipe engineering
Standard-dynamic-range video, color clarity and realism in images and videos, the current standard for video and cinema displays
Super Dynamic Range, SDR (audio) or XDR, an encoding system for audio cassettes
System of distinct representatives, in mathematics

Special drawing rights, foreign-exchange reserve assets overseen by the IMF
Social discount rate, a measure of the value of diverting funds to social projects

Stardust Records, a Stardust Promotion label
Süddeutscher Rundfunk, former public broadcaster in Germany, then merged into Südwestrundfunk (SWR)
Swiss Derivatives Review, a magazine for the futures and options industries