# Darcy friction factor

> English word · Noun

## Definitions
1. A dimensionless friction factor relating the head loss over a pipe to the lengthscale of the pipe and the fluid velocity.

## Etymology
From the name of hydraulic engineer Henry Darcy.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/darcy-friction-factor