The term 'cubed roots' refers to the process of finding the root of a number that has been cubed. This is done by taking the cube root of the number, which is the number that when multiplied by itself three times will equal the original number. The crossword solution for this term is 'DICED', which is a reference to the fact that the cube root of a number can be found by dividing the number into smaller cubes and then finding the root of each cube.