pour pointn.2
/ˈpɔː pɔɪnt/, U.S. /ˈpɔr ˌpɔɪnt/ The temperature below which liquid, esp. oil, is too viscous to be poured.
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the world > matter > properties of materials > temperature > [noun] > at which some specific condition occurs
freezing-point1748
boiling-point1773
absolute zero1798
firing point1807
melting temperature1827
ice point1832
dew-point1833
melting point1838
neutral temperature1854
fusing point or temperature1860
welding point1868
flashing-point1878
flashpoint1878
mp1880
ignition temperature1881
silver-point1882
fire point1884
ignition point1887
neutral point1892
smoking point1915
smoking temperature1915
pour point1922
smoke point1933
1922 T. G. Delbridge in D. T. Day Handbk. Petroleum Industry I. 660 Pour point of a petroleum oil is the lowest temperature at which this oil will pour or flow when it is drilled without disturbance under certain definite specified conditions.
1936 W. L. Nelson Petroleum Refinery Engin. v. 48 Since 1929..the average specified pour-point for lubricating oils has been lowered from 30 to about 10°F.
1972 Daily Colonist (Victoria, Brit. Columbia) 3 Feb. 12/8 The reservoir has..a low sulphur content and a pour point of minus 55 degrees Fahrenheit.
1991 Power Sept. 52/1 The LSWR's high wax content and high pour point (above 40C) requires that the oil be kept above 50C before the fuel transfer pump.
This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022).
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