English
isothere
Isothere comes from French isothère, from Ancient Greek θέρος ‘summer’, and ultimately from Proto-Indo-European *gʷʰer- ‘warm, hot’.
- Proto-Indo-Europeanc. 4500–2500 BCE*gʷʰer-‘warm, hot’reconstructed
- Proto-Indo-European, derivedc. 4500–2500 BCE*gʷʰéros‘heat’reconstructed
- Proto-Hellenicc. 2200–1600 BCE*kʷʰéros‘heat’reconstructed
- Ancient Greekc. 800–300 BCEθέροςthéros‘summer’
- Frenchc. 1600–presentisothère
- Englishtodayisothere
attested reconstructed ? uncertain or disputed
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*gʷʰer-‘warm, hot’reconstructed
- Proto-Indo-European, derivedc. 4500–2500 BCE*gʷʰéros‘heat’reconstructed
- Proto-Hellenicc. 2200–1600 BCE*kʷʰéros‘heat’reconstructed
- Ancient Greekc. 800–300 BCEθέροςthéros‘summer’
- Frenchc. 1600–presentisothère
- Englishtodayisothere
Linked words
through Proto-Indo-European *gʷʰer- ‘warm, hot’
warm, furnace, gore, thermal, gory, forceps, garlick, thermos, 17 more
Today it means
noun An isotherm connecting points on a map with equal mean summer temperature.
Language periods are conventional ranges, not dates for this word.
Etymograph / Proto-Indo-European *gʷʰer- / isothere