Definition of "isotherms" [isotherms]

• Plural form of isotherm. (noun)

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• ""Geographic shifts in temperature bands, known as isotherms, in the sea have outpaced those observed on land," William J. Sydeman, one of the report's authors, said in a press release."
• "During the past thirty years the lines marking the regions in which a given average temperature prevails ( "isotherms") have been moving poleward at a rate of about thirty-five miles per decade."
• "The dotted lines are called 'isotherms' and they follow the lines of places having the same temperature."