isotherm

[ ahy-suh-thurm ]

noun

1. Meteorology. a line on a weather map or chart connecting points having equal temperature.
2. Also called isothermal line. Physics. a curve on which every point represents the same temperature.

isotherm

/ ˈaɪsəʊˌθɜːm /

noun

1. a line on a map linking places of equal temperature
2. physics a curve on a graph that connects points of equal temperature

isotherm

/ ī′sə-thûrm′ /

1. A line drawn on a weather map connecting points that have the same temperature. Each point can mark one temperature reading or an average of several readings.

Word History and Origins

Origin of isotherm¹

First recorded in 1855–60; back formation from isothermal

Example Sentences

“And ice occurs only below zero Celsius, in the zero isotherm—the bottom boundary of the charging zone. Somewhere within this zone, lightning ignites. When the distance is shorter between this zone and the oceans or plateaus, we get much higher energy.”

From National Geographic

McKinzie was followed by Higher Power, who stumbled at the start, Seeking the Soul, Draft Pick and Isotherm.

From Los Angeles Times

The second favorite is Isotherm at 3-1.

From Los Angeles Times

West Coast was second and Isotherm was third.

From Los Angeles Times

In the $200,000 San Marcos Stakes, Prat won his fourth consecutive race, guiding Isotherm to victory in the 1 1/4-mile turf stakes.

From Los Angeles Times