Word parts change

thick + -ness

Pronunciation change

Noun change

Singular
thickness

Plural
thicknesses

  1. The thickness of something is how thick it is; how far it is from one side of it to the other side.
    The thickness of one piece of paper is much less than a millimetre.
    This blanket is too thin. It doesn't have enough thickness to keep me warm.

Related words change