fric·​tion·​al ˈfrik-shnəl How to pronounce frictional (audio)
: of or relating to friction
: moved or produced by friction
frictionally adverb

Examples of frictional in a Sentence

Recent Examples on the Web Orbital flights involve far greater energies, speeds and altitudes—and in principle can be endless once a stable orbit is reached, well above frictional interference from our planet’s momentum-sapping atmosphere. Rick N. Tumlinson, Scientific American, 15 Jan. 2024 Did any unsolved frictional moments or inclusion hiccups occur that could surface during performance review time? Simone E. Morris, Forbes, 28 Nov. 2023 This causes the water to move, but the frictional interaction also heats the water up. Rhett Allain, WIRED, 31 Oct. 2023 Thus, two opposing forces act on a cat during a fall: the gravitational force Fg and the frictional force FR, which slows it down. Manon Bischoff, Scientific American, 24 July 2023 Of course, at the start of the motion, this frictional force would be greater than the artificial gravity. Rhett Allain, Wired, 14 May 2021 First, there's the static frictional force, which is the case when the two surfaces are stationary relative to each other. Rhett Allain, WIRED, 7 July 2023 To what degree a fault experiences frictional healing can depend on a variety of variables, such as the minerals in the earth, pressure, or temperature. Sarah Wells, Popular Mechanics, 13 Mar. 2023 In their paper, Shreedharan and colleagues found that materials like clay may have low frictional healing. Sarah Wells, Popular Mechanics, 13 Mar. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'frictional.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1850, in the meaning defined at sense 1

Time Traveler
The first known use of frictional was in 1850

Dictionary Entries Near frictional

Cite this Entry

“Frictional.” Dictionary, Merriam-Webster, Accessed 22 Feb. 2024.

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