isotherm
Americannoun
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Meteorology. a line on a weather map or chart connecting points having equal temperature.
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Also called isothermal line. Physics. a curve on which every point represents the same temperature.
noun
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a line on a map linking places of equal temperature
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physics a curve on a graph that connects points of equal temperature
Etymology
Origin of isotherm
First recorded in 1855–60; back formation from isothermal
Vocabulary lists containing isotherm
Weather and Climate - Middle School
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Earth Science - Middle School
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Earth Science - High School
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The isotherm which touches the southern limits of France passes midway between the source and mouth of the river.
From The French in the Heart of America by John Finley
Its summit displays a glittering ice-cap, and we are certain to find the proper isotherm by climbing its umbrageous sides.
From Life: Its True Genesis by R. W. Wright
It is found in a belt of territory running from New England and the Atlantic states westward at least to Nebraska along a line which approximates the annual isotherm of fifty degrees Fahrenheit.
From Butterflies Worth Knowing by Clarence M. Weed
London, for example, lies in the same latitude as the southern extremity of Hudson Bay; but the isotherm of London, as Humboldt outlines it, passes through Cincinnati.
From A History of Science — Volume 3 by Henry Smith Williams
In the southern hemisphere this isotherm crosses the southern extremity of South America, and runs fairly east and west around the globe there.
From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" by Various
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
