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1A line on a map connecting points having the same temperature at a given time or on average over a given period.
- ‘The Curie isotherm is a temperature surface in the Earth's subsurface connecting depths at which Curie temperatures are reached.’
- ‘Put differently, isotherms are as important as latitudes in determining what constitutes Arctic and Subarctic regions.’
- ‘Humboldt used lines, called isotherms, to delineate regions of equal temperatures.’
- ‘The average temperature of an underground site reflects the yearly isotherm of the area.’
- ‘In tropical and subtropical mountains the tree line occurs where the summer isotherms are as low as 3-6°C.’
A curve on a diagram joining points representing states or conditions of equal temperature.
- ‘To explore the affinity distribution methods, we first studied equilibrium isotherms.’
- ‘The corresponding surface tension isotherms in the case of high lipid concentration are presented in Fig.7.’
- ‘Surface pressure and surface potential isotherms were directly acquired during the measurement.’
- ‘This is consistent with the S shape of isotherms in all numerical models simulating temperature evolution in subduction zones.’
- ‘All data points in the adsorption isotherm represent an average of three experiments.’
Mid 19th century: from French isotherme, from Greek isos equal + thermē heat.
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