# diffusivity

> English word · Noun · frequency rank #94,771

## Definitions
1. A tendency to diffuse
2. a coefficient of diffusion; especially the amount of heat that passes through a given area in unit time

## Etymology
From diffusive + -ity.

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