thicknesses is a form of:

Thickness



noun
1.
(A being thick, distance through or between opposite surfaces density; layer) កំរាស់, ភាពខាប់, ភាពណែនណាន់តាន់តាប់
Example: The thickness of this, 6 thickness of bandage, thickness of population.
ENGLISH MEANING
noun
1.
The quality or state of being thick (in any of the senses of the adjective).