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A line drawn on a weather map or chart linking all points of equal or constant temperature.
[From French isotherme, having the same temperature : Greek īso-, iso- + Greek thermē, heat; see -therm.]
nAlso called: isothermal or isothermal line
1. (Physical Geography) a line on a map linking places of equal temperature
2. (General Physics) physics a curve on a graph that connects points of equal temperature
1. a line on a weather map or chart connecting points having equal temperature.
2. a curve representing changes in volume and pressure while at the same temperature.
[1855–60; < French; see isothermal]
A line drawn on a weather map connecting places having the same average temperature.
A line drawn on a map linking places that have the same temperature.
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|Noun||1.||isotherm - (meteorology) an isogram connecting points having the same temperature at a given time|
weather chart, weather map - (meteorology) a map showing the principal meteorological elements at a given time and over an extended region
meteorology - the earth science dealing with phenomena of the atmosphere (especially weather)