uniaxial compressive strength

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1. n. [Geology, Geophysics, Formation Evaluation]
A measure of a material’s strength. The uniaxial compressive strength (UCS) is the maximum axial compressive stress that a right-cylindrical sample of material can withstand before failing. It is also known as the unconfined compressive strength of a material because confining stress is set to zero.
Alternate Form: UCS, unconfined compressive strength