- suffix used after an Intel processor model number to signify that the processor has a floating-point arithmetic unit, a 32-bit data path, and a built-in cache
- acronym fordocument exchange
- noun a bureau which receives documents for clients and holds them securely in numbered boxes.
- acronym fordistance reception
- acronym forduplex
- The reception of transmissions from distant radio stations. Certain layers of the ionosphere, for instance, enable such reception. Its abbreviation is DX.