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Definition of thickness

thickness

/ˈθɪk.nəs/
thick · ness
Adverb:thickly
•
Plural:thicknesses
•
Adjective:thick
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thickness Lexical Profile

thickness Game Scores & Validity

• noun

1

The distance between opposite surfaces of a three-dimensional object, typically the smallest of its three dimensions (as opposed to length or width).

Example

"The carpenter measured the thickness of the oak plank before cutting it to fit the frame."

2

The quality or state of being dense, closely packed, viscous, or semi-solid.

Example

"Adding cornstarch and simmering the sauce for ten minutes will increase its thickness."

3

A distinct layer, sheet, or stratum of material.

Example

"She folded the fabric into four thicknesses to provide extra padding for the cushion."

Synonyms
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Antonyms
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• Rhymes for thickness

• Nearby Words

thickie
thickish
thickly
thickness
thickset
thicky
thief

Word Origin & Etymology

From Old English 'þicnes', formed from the adjective 'þicce' (thick) and the noun-forming suffix '-nes' (-ness).

Cite this Entry

Wordmom. (2026). Definition of Thickness. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/thickness
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