rheid

Noun

 * 1)  Any member of the ; a rhea.

Etymology 2
Coined by S. Warren Carey in 1953; related to.

Noun

 * 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.