frictional

[ frik-shuh-nl ]

adjective

1. of, relating to, or of the nature of friction.
2. moved, worked, or produced by friction.

Other Words From

• friction·al·ly adverb
• un·friction·al adjective
• un·friction·al·ly adverb

Word History and Origins

Origin of frictional¹

First recorded in 1840–50; friction + -al ¹

Example Sentences

Gas and dust swirling toward the black hole form an accretion disk around it and heat up through gravitational and frictional forces, creating the variability.

From Science Daily

"Earthquakes and tectonic phenomena follow scale-invariant laws, so findings from our laboratory-scale frictional setup are relevant for understanding remote earthquake triggering by seismic waves in much larger-scale faults in the Earth's crust," says Farain.

From Science Daily

An active galaxy has an unusually bright and variable center powered by a supermassive black hole that heats a surrounding disk of gas and dust through gravitational and frictional forces.

From Science Daily

A more recent trend, however, has been to investigate systems whose frictional response can be dynamically tuned in situ, especially as micro- and nanoscale devices become more common.

From Science Daily

But at greater fall heights, the frictional force becomes noticeable during the fall.

From Scientific American