multiplatinum

As a noun terms

is .

As an adjective multiplatinum is

(music) having exceeded the platinum level of sales on multiple occasions.

In music|lang=en terms the difference between platinum and multiplatinum

is that platinum is (music) a single or album that has achieved platinum sales, ie over 1 million or 2 million while multiplatinum is (music) having exceeded the platinum level of sales on multiple occasions.

As adjectives the difference between platinum and multiplatinum

is that platinum is of a whitish grey colour, like that of the metal while multiplatinum is (music) having exceeded the platinum level of sales on multiple occasions.

As a noun platinum

is the metallic chemical element with atomic number 78 and symbol pt.