Where does “tornasol” come from?

tornasol (Galician) comes from Galician sol, from English Sol, from Old French sol, from Latin solidum, from Latin solidus, from Proto-Italic soliðos, from Proto-Indo-European solh₂-i-dʰ-o-s, from Proto-Indo-European solh₂- — whole.

tornasol (Galician): litmus; iridescence; sunflower

Definitions

  1. litmus; iridescence; sunflower

Ancestry of “tornasol”, step by step

tornasol traces back through two separate lines of ancestry.

via Galician sol

StepLanguageWordMeaning
1Galiciansolsun; sunlight; sunny side
2EnglishSolThe Sun, the star orbited by the Earth
3Old Frenchsolalone; sol; Old French coin
4Latinsolidumsolid
5Latinsolidussolid; A solidus: a Roman ~23-carat gold coin...
6Proto-Italicsoliðos
7Proto-Indo-Europeansolh₂-i-dʰ-o-sentire
8Proto-Indo-Europeansolh₂-whole

via Galician tornar

StepLanguageWordMeaning
1Galiciantornarto turn; to turn back; to drive away
2Latintornōto turn
3LatintornusA turner's wheel, lathe; A potter's wheel
4Ancient GreekτόρνοςA tool similar to a pair of compasses used to...
5Proto-Indo-Europeantorh₂no-
6Proto-Indo-Europeanterh₁-to rub, turn; to drill, pierce
Every word from Proto-Indo-European solh₂-Every word from Proto-Indo-European solh₂-i-dʰ-o-sEvery word from Proto-Italic soliðos