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

While its dimensions mirror those of the Tourbillon model at 35.5 mm wide by 38.6 mm in length, its case depth is just 7.70 mm tall owing to a movement thickness of only 3.1 mm. —Paige Reddinger, Robb Report, 21 Jan. 2025

If you’re predetermined to have finer strands, there are ways of inflating and boosting them to encourage the appearance of thickness, which is where styling and cuts come in. —Elle Turner, Glamour, 21 Jan. 2025

The round stainless steel case, measuring 39 mm in diameter and 9.25 mm in thickness, houses a mechanical self-winding movement, the RW4200, which boasts a power reserve of 41 hours. —Bhanu Chopra, Forbes, 17 Jan. 2025

As for portability, the laptop is generally as large and heavy as last year’s model, which had a 0.75-inch thickness and weighed 4.68 pounds. —Joe Osborne, PCMAG, 6 Jan. 2025

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