Meaning of THICKNESS in English
n. 1 the state of being thick. 2 the extent to which a thing is thick. 3 a layer of material of a certain thickness (three thicknesses of cardboard). 4 a part that is thick or lies between opposite surfaces (steps cut in the thickness of the wall).
[ OE thicness (as THICK, -NESS) ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012