The dimension of pressure is represented by the formula M1 L-1 T-2, where M represents mass, L represents length, and T represents time. This means that the dimension of pressure is 1 for mass, -1 for length, and -2 for time. The dimensional formula of pressure can be derived using the definition of pressure, which is force per unit area. By substituting the dimensional formula of force and area into the equation for pressure, we can obtain the dimensional formula for pressure.