isoline

noun
iso·​line | \ ˈī-(ˌ)sō-ˌlīn How to pronounce isoline (audio) \

Definition of isoline

: a line on a map or chart along which there is a constant value (as of temperature or rainfall)

First Known Use of isoline

1944, in the meaning defined above

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The first known use of isoline was in 1944

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Cite this Entry

“Isoline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/isoline. Accessed 24 May. 2020.

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