pour point

noun Chemistry.
the lowest temperature at which a substance will flow under given conditions.

Origin:
1920–25

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World English Dictionary
pour point
 
n
chem the lowest temperature at which a mineral oil will flow under specified conditions

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
Important characteristics of diesel fuels are its viscosity, pour point, and cetane number.
Additionally cloud point, pour point and crystallization onset will be tested.
Watershed boundaries originated at the bog mat pour point, of which there could be many in the case of a raised peatland.
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