Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co.
Microsoft Direct X is a collection of application programming interfaces (APIs) for handling tasks related to multimedia, especially game programming and video, on Microsoft platforms.
For the PC, however, game developers face an infinite number of hardware configurations.
Getting games to work correctly over a vast universe of graphics cards, motherboards and so on seems like pulling a rabbit out of a magician's hat.
It must be less than 10 and meaningful that you are/will working on activites.
As Direct3D is the most widely publicized component of Direct X, it is common to see the names "Direct X" and "Direct3D" used interchangeably.