This is the 12812th most frequent Russian word.
кубический
Cubic.
The word 'кубический' here describes a unit of volume, referring to a cubic shape with equal sides.
Объём этой коробки составляет один кубический метр.
The volume of this box is one cubic meter.
Here, 'кубический' refers to a mathematical property relating to the cube (the third power).
В геометрии мы изучили кубический корень из числа.
In geometry, we studied the cubic root of a number.
In this context, 'кубический' characterizes the shape of the container as being a cube.