bulk-modulus

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.
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