Where does “Meeresspiegel” come from?

Meeresspiegel (German) comes from German spiegel, from Middle High German spiegel, from Old Saxon spiagal, from Proto-Germanic *spēgl, from Medieval Latin speglum, from Latin speculum, from Proto-Italic -klom, from Proto-Indo-European -tlom — Derives agent nouns from verbs, denoting someone...

Meeresspiegel (German): sea level

Definitions

  1. sea level

Ancestry of “Meeresspiegel”, step by step

Meeresspiegel traces back through two separate lines of ancestry.

via German spiegel

StepLanguageWordMeaning
1Germanspiegelinflection of spiegeln: ## first-person singular...
2Middle High Germanspiegelmirror
3Old Saxonspiagal—
4Proto-Germanic*spēgl—
5Medieval Latinspeglum—
6Latinspeculuma looking-glass, mirror
7Proto-Italic-klom—
8Proto-Indo-European-tlomAlternative form of *-trom
9Proto-Indo-European-tromForms nouns denoting a tool or instrument
10Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

via German Meer

StepLanguageWordMeaning
1GermanMeersea; lake
2Middle High Germanmere—
3Old High Germanmēromore
4Proto-West Germanic*maiʀōmore, larger
5Proto-Germanicmaizôcomparative degree of *mikilaz; more
6Proto-Indo-Europeanmē-to measure; endeavour, will, temper; many
Every word from Proto-Indo-European -tḗr →Every word from Proto-Italic -klom →Every word from Latin speculum →