1 n-sing If you are at the forefront of a campaign or other activity, you have a leading and influential position in it.
the N, usu at/in/to N, N of/in n/-ing
They have been at the forefront of the campaign for political change.
2 n-sing If something is at the forefront of people's minds or attention, they think about it a lot because it is particularly important to them.
the N, usu at/in/to N of n
The pension issue was not at the forefront of his mind in the spring of 1985.