HealthAugust 24, 2026

frictional

FRIK-shuh-nul

Definition

Relating to or caused by the resistance encountered when one surface or object moves over another.

Etymology

Derived from the Latin 'frictio', meaning 'a rubbing', which stems from the verb 'fricare', meaning 'to rub'. It entered English in the 17th century to describe the interaction between surfaces.

In the news

The article uses the term to describe the physical force of blood flowing against the lining of blood vessels, which serves as a necessary signal to keep vessel walls healthy and flexible.

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