isoline

noun

iso·​line ˈī-(ˌ)sō-ˌlīn How to pronounce isoline (audio)
: a line on a map or chart along which there is a constant value (as of temperature or rainfall)

Word History

First Known Use

1944, in the meaning defined above

Time Traveler
The first known use of isoline was in 1944

Dictionary Entries Near isoline

Cite this Entry

“Isoline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/isoline. Accessed 24 May. 2024.

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