bulk modulus

noun Physics.
a coefficient of elasticity of a substance, expressing the ratio between a pressure that acts to change the volume of the substance and the fractional change in volume produced.

Origin:
1905–10

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World English Dictionary
bulk modulus
 
n
K a coefficient of elasticity of a substance equal to minus the ratio of the applied stress (p) to the resulting fractional change in volume (dV/V) in a specified reference state (dV/V is the bulk strain)

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American Heritage
Science Dictionary
bulk modulus   (bŭlk)  Pronunciation Key 
See under modulus of elasticity.
The American Heritage® Science Dictionary
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Example sentences
The bulk modulus can be set via the keyword modulus.
Typically, the yield strength is much less than the bulk modulus.
Brain tissue is resistant to the dilatational deformation and hydrostatic stress due to the high bulk modulus.
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