thickness

1 ENTRIES FOUND:
thickness /ˈθɪknəs/ noun
thickness
/ˈθɪknəs/
noun
Britannica Dictionary definition of THICKNESS
1 
a  : the distance between the top and bottom or front and back surfaces of something : a measurement of how thick something is
[noncount]
[count]
b  [noncount] : the quality of being thick
2 
[count] : a layer or sheet of some material — usually + of