dew-pointn.
/ˈdjuːpɔɪnt/, /ˈdʒuːpɔɪnt/, U.S. /ˈd(j)uˌpɔɪnt/ a. That point of atmospheric temperature at which dew begins to be deposited.
ΘΚΠ
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
1833 N. Arnott Elements Physics (ed. 5) II. 47 The degree of heat at which the dew begins to appear is called the dew-point, being an important particular in the meteorological report of the day.
1854 J. D. Hooker Himalayan Jrnls. I. i. 14 This indicated a dew-point of 11½°.
1878 T. H. Huxley Physiography (ed. 2) 52 When the temperature is sufficiently lowered, the dew-point is reached.
b. attributive, as dew-point apparatus, dew-point depression, dew-point front, dew-point hygrometer, dew-point meter.
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1844 Proc. Amer. Philos. Soc. 1841–3 2 249 Professor Baebe described a dew-point hygrometer.
1933 Discovery Dec. 360/1 The dew-point apparatus..is designed to discover the temperature to which a metal must be cooled before dew will deposit upon it.
1956 W. A. Heflin U.S. Air Force Dict. 165/1 Dew point depression, the lowering of the dew point by decreasing water content or pressure.
1958 Engineering 4 Apr. 422/1 A dew point meter for use with any gases that are not corrosive to brass or copper.
1960 Aeroplane 99 624/1 The dew-point front is the boundary between moist ‘maritime tropical’ air..and dry ‘tropical continental’ air.
This entry has not yet been fully updated (first published 1895; most recently modified version published online March 2022).
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