# rheid

> English word · Noun · IPA /ˈriːɪd/

## Definitions
1. A substance whose temperature is below the melting point and whose deformation by viscous flow during the time of observation is at least three orders of magnitude (1,000 ×) greater than the elastic deformation under the given conditions.

## Etymology
Coined by S. Warren Carey in 1953; related to rheology.

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