I use this Uric Acid, Gout and Hyperuricemia image to illustrate my Uric Acid Guidelines.
Hyperuricemia simply means excess uric acid. I say simple, but the definition of excess is not clear. The most common definition is 7mg/dL, or higher. You can see better analysis of excess uric acid in my Uric Acid Levels Chart.
The image shows that, though microscopically small as a single molecule, clumps of uric acid crystals can grow into tophi. Tophi can become very large, if hyperuricemia is not treated. As the image says:
So very small
So very cruel
Learn more about uric acid and hyperuricemia, including their relationship to gout, in my Uric Acid guidelines.