Definitions for "Direct X"
A utility that enhances multimedia capabilities on your computer. DirectX provides better playback of different types of multimedia and manages 3-D graphics better than console computers.
A technology which permits software programmers to directly access hardware devices for improved performance.  Includes DirectDraw, Direct3D, DirectInput, DirectSound and DirectPlay.
A technology developed by Microsoft that gives programmers low-level access to the sound and graphics capabilities of a computer in order to optimize and accelerate performance. This technology is most often used for games that require "real time" rendering of visuals.