(1) (
Standard
Definition) See
SDTV and
SD formats.
(2) (
Secure
Digital) See
SD card.
(3) (
Software
Development) See
developer.
(4) (
Software
Defined) See
software-defined everything.
(5) (
Super
Density) An earlier CD specification from Toshiba, Time Warner and others that was merged with the MultiMedia CD (MMCD) format to become the DVD standard.