dGPU

Noun

 * 1)   a graphics processing unit which has access to dedicated graphics memory
 * 2)   a graphics processing unit which has access to dedicated graphics memory
 * 3)  video card, graphics card

Usage notes
Since discrete GPUs are often (though not always) embedded on their own circuit boards and come in the form of an expansion card, dGPU is sometimes used synonymously with video card and graphics card in colloquial and non-professional contexts.