In geology, a rheid / ˈriːɪd / is a substance whose temperature is below its 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.

A rheid is a non-molten solid that deforms by viscous flow at least a thousand times faster than it would deform elastically under the same applied stress. The term, which was coined by S. Warren Carey in 1953, has the same Greek root as rheology, …

Jan 16, 2008 · The rheidity of a substance is defined as that property which determines whether it will behave as a fluid or solid for a particular experiment.

What does the word rheid mean? There are two meanings listed in OED's entry for the word rheid. See ‘Meaning & use’ for definitions, usage, and quotation evidence. How common is the …

In geology, a rheid is a solid material that deforms by viscous flow. To be considered a rheid, deformation by flow should exceed elastic deformation by at least a factor of three.

In geology, a rheid is a solid material that deforms by viscous flow. To be considered a rheid, deformation by flow should exceed elastic deformation by at least a factor of three.

i. A substance below its melting point that deforms by viscous flow during the time of applied stress at an order of magnitude at least three times that of the elastic deformation under similar conditions. ii. A body of rock showing flow structure.

The length of time that it takes for a solid material to flow when subjected to pressure. The rheidity of ice is measured in weeks and that of igneous rocks close to the surface in tens of thousands of years. See rheid flow.

Rheidae / ˈriːɪdiː / is a family of flightless ratite birds which first appeared in the Paleocene. [2] . It is today represented by the sole living genus Rhea, but also contains several extinct genera. [3] Order Rheiformes (Forbes, 1884) Furbringer, 1888 [Rheimorphae Bonaparte, 1849; Rheae Forbes 1884] [4][5][6][7][8] Genus ?†.

(geology) 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.