isoline
noun
iso·line
ˈī-(ˌ)sō-ˌlīn 
: a line on a map or chart along which there is a constant value (as of temperature or rainfall)
Cite this Entry
“Isoline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/isoline. Accessed 28 Nov. 2025.
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