Where does “sundial” come from?

I need to pause here because the chain provided appears to contain errors or inconsistencies that make it impossible to write an accurate etymology. The chain shows: - Multiple disconnected paths (English sun → Japanese 寸 → Old English synn, but also separate Latin dies entries) - "Japanese 寸" (meaning "sun" or "inch"?) doesn't fit a standard English-to-Japanese etymological chain - Latin "dies" (meaning "day") appears twice with different preceding steps - Proto-Indo-European roots (h₁es- and sew-) don't clearly connect to a "sun" etymology - No clear path to "sundial" specifically For "sundial," a legitimate etymology would trace: English sundial (sun + dial) ← Old English sunne (from Proto-Germanic *sunnōn) and dial ← Old French dyal ← Medieval Latin dialis.

sundial (English): A device measuring the time of day by the...

Definitions

  1. A device measuring the time of day by the...

Ancestry of “sundial”, step by step

sundial traces back through two separate lines of ancestry.

via English dial

StepLanguageWordMeaning
1EnglishdialA graduated, circular scale over which a needle...
2Middle EnglishdiallA pointer on a dial; A timekeeping instrument,...
3Middle Frenchdyal
4LatindiālisOf or belonging to the god Jupiter
5LatindiēsA day, particularly
6Proto-Italicdjēmaccusative singular of *djous
7Proto-Italic*djous
8Proto-Indo-Europeandyḗwssky, heaven; sky god
9Proto-Indo-Europeandyéwssky, heaven
10Proto-Indo-Europeandyew-to be bright; sky, heaven

via English Sun

StepLanguageWordMeaning
1EnglishSunAbbreviation of Sunday
2Middle EnglishsunneAlternative form of sonne; sun
3Old Englishsunnesun
4Proto-West Germanicsunnāsun
5Proto-Germanicsunnǭthe sun
6Proto-Indo-Europeansh̥₂uénsun; the Sun
7Proto-Indo-Europeansóh₂wl̥sun
Every word from Proto-Indo-European dyew-Every word from Proto-Indo-European dyéwsEvery word from Proto-Indo-European dyḗws