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

Highlights also can and often do vary in thickness, placement, and tone, ranging from subtle and natural to bold and dramatic (think: early 2000s). —Danielle Sinay, Glamour, 17 Sep. 2024

But, ponte knit’s natural thickness ensures they aren’t see-through. —Kelsey Glennon, Travel + Leisure, 10 Sep. 2024

The 40 mm platinum case measures 10.6 mm in thickness, with a sapphire exhibition caseback offering a view of the beautifully finished movement. —Allen Farmelo, Robb Report, 6 Sep. 2024

Studies have shown a long and drawn-out reduction in eggshell thickness in blackbirds, song thrushes and mistle thrushes, for instance, all linked to acidification of their lowland environments, mostly through pollutants such as sulphur dioxide and nitrogen oxide. —Jules Howard, TIME, 4 Sep. 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