# rheology

> English word · Noun · IPA /ɹiːˈɒlədʒi/ · frequency rank #86,696

## Definitions
1. The branch of physics that studies the deformation and flow of matter.

## Etymology
Coined by American scientist Eugene C. Bingham in 1920, following a suggestion by a colleague, Markus Reiner; inspired by aphorism πάντα ῥεῖ (pánta rheî, “everything flows”) by Simplicius of Cilicia. Formed from Ancient Greek ῥέω (rhéō, “flow”) + -logy (“study of”, suffix ultimately from Ancient Greek). See also rheo-.

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