thinness

relatively small dimension through an object as opposed to its length or width; "the tenuity of a hair"; "the thinness of a rope"

the property of having little body fat

the property of being very narrow or thin; "he marvelled at the fineness of her hair"

the property of being scanty or scattered; lacking denseness

a consistency of low viscosity; "he disliked the thinness of the soup"