thickness

Universal Words noun 1 [U,C] the size of sth between opposite surfaces or sides SYNWIDTH: Use wood of at least 12 mm thickness. * Cook for about 10 minutes, depending on the thickness of the steaks. * Roll out the pastry to a thickness of 1 cm. * The walls are at least two feet in thickness. * The board is available in four thicknesses. 2 [C] ~ (of sth) a layer of sth: The jacket was lined with a double thickness (= two layers) of fabric.