noun: (finance) Initialism of special drawing right. [A monetary unit of account maintained by the International Monetary Fund (IMF), the value of which is based on a basket of major currencies, currently (since 2016) consisting of the US dollar, the euro, the renminbi, the Japanese yen, and the pound sterling.]
noun: (computing, electronics) Initialism of single data rate. [(electronics) A communication signaling technique that transfers data on either the rising edge or the falling edge of the clock signal.]
noun: (mathematics) Initialism of system of distinct representatives.
noun: (telecommunications) Abbreviation of software defined radio. [(telecommunications) A radio that creates and receives radio signals through software controlled DSPs (digital signal processors) with ADCs (analog-to-digital converters) and DACs (digital-to-analog converters).]
noun: (television, retronym) Initialism of standard dynamic range.
noun: (uncommon) Initialism of Sara Delano Roosevelt.
