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Vinony

isotherm

noun

  1. line or surface of constant temperature
L36938 on Wikidata ↗

Wiktionary

Pronunciation: /ˈaɪ.səʊˌθɜː(ɹ)m/

noun

Etymology: From the French isotherme (“of equal temperature”, adjective), itself from Ancient Greek ἴσος (ísos, “equal”) + θέρμη (thérmē, “warmth”). By surface analysis, iso- + -therm.

  1. A line on a graph or chart, such as a weather map, along which all the points have the same temperature.