thick·ness 
/ˈθɪknəs/ noun
/ˈθɪknəs/ noun 1 a : the distance between the top and bottom or front and back surfaces of something : a measurement of how thick something is [noncount] ▪ The plank measures two inches in thickness. [count] ▪ the length, circumference, and thickness of the log ▪ Plywood is available in various thicknesses. ▪ Cooking time will vary depending on the thickness of the steak/chops.
b [noncount] : the quality of being thick
▪ I added flour to increase the gravy's thickness. ▪ I was surprised by the thickness of his accent. 2 [count] : a layer or sheet of some material — usually + of ▪ a single thickness of canvas/foil/cloth
b [noncount] : the quality of being thick
▪ I added flour to increase the gravy's thickness. ▪ I was surprised by the thickness of his accent.
