通用媒体光盘(Universal Media Disc,简称UMD)是索尼电脑娱乐(SCE)的掌上型游戏机PlayStation Portable(PSP)上首次应用的光盘规格。
英语百科
Universal Media Disc 通用媒体光碟
The Universal Media Disc (UMD) is an optical disc medium developed by Sony for use on their PlayStation Portable handheld gaming and multimedia platform. It can hold up to 1.8 gigabytes of data and is capable of housing video games, feature-length films, and music. UMD was the trademark of Sony Computer Entertainment Inc. for their optical disk cartridge (ODC).