Visualization - forming a mental image...
Visualization: vi'su·al·i·za'tion n. - 1. mental image of something. 2. computer 3-D represention
Visualize: vi·su·al·ize v. - to form a mental image.
For those of us who cannot 'look into the mind' of another person, it is useful to create a 3-D representation in the 'mind' of a computer allowing us to each 'see' the same image on the screen and in our minds. Manipulation of the 3D representation either in a linear presentation or interactively furthers our understanding and refinement of the original idea.
We use visualization to 'see' something hapening. For example: