## Wikipedia - حد الخضوع (ar) yield stress

https://doi.org/10.1351/goldbook.Y06727
The @[email protected] $$\sigma _{0}$$ or $$\tau _{0}$$ at which yielding starts abruptly. Its value depends on the criterion used to determine when yielding occurs.
Source:
PAC, 1979, 51, 1213. (Terminology and Symbols in Colloid and Surface Chemistry Part 1.13. Definitions, Terminology and Symbols for Rheological Properties) on page 1217 [Terms] [Paper]