Seaforium is a type of explosive compound in the Warcraft universe that comes in a powdered form. According to Ashlan Stonesmirk, "Seaforium is harmless enough, but once it's wet it could blow Ironforge out of the mountain".
In terms of items, seaforium usually refers to the various kinds of Seaforium Charge:
- [Small Seaforium Charge]
- [Large Seaforium Charge]
- [Powerful Seaforium Charge]
- [Elemental Seaforium Charge]
There is also a quest item, [Seaforium Booster].
Trivia
Because of the way it's pronounced, seaforium may be a reference to the real-life explosive compound, C-4.