thickness

noun

thick·​ness ˈthik-nəs 

1

: the smallest of three dimensions

length, width, and thickness

2

: the quality or state of being thick

3

a

: viscous consistency

boiled to the thickness of honey

b

: the condition of being smoky, foul, or foggy

4

: the thick part of something

5

: concentration, density

6

: stupidity, dullness

7

: layer, ply, sheet

a single thickness of canvas

Synonyms

• consistence
• consistency
• density
• viscidity
• viscosity

Examples of thickness in a Sentence

The plank measures two inches in thickness.

the length, circumference, and thickness of the log

Plywood is available in various thicknesses.

Cooking time will vary depending on the thickness of the steak.

I added flour to increase the gravy's thickness.

I was surprised by the thickness of his accent.

Recent Examples on the Web

Or consider another possible tweak to standard dimensions that would boost a building’s versatility: modifying its thickness, especially toward the bottom. —Justin Davidson, Curbed, 12 Dec. 2024

The thickness of the icing will determine its drying time. —Tricia Manzanero Stuedeman, Southern Living, 10 Dec. 2024

This set has over 1,500 reviews, with many calling out its thickness and softness. —Kelsey Glennon, Travel + Leisure, 3 Dec. 2024

Flat cell imaging confines living cells between two transparent glass slides, reducing their thickness to as little as 200 nanometers and, in the process, spreading the contents over an area up to nine times greater than an unflattened cell occupies. —The Physics Arxiv Blog, Discover Magazine, 2 Dec. 2024

Word History

First Known Use

before the 12th century, in the meaning defined at sense 1

Kids Definition

thickness

noun

thick·​ness ˈthik-nəs 

1

: the quality or state of being thick

2

: the smallest of three dimensions

length, width, and thickness

3

: the thick part of something

4

: layer entry 1 sense 2

a single thickness of canvas