Where does “ostro” come from?

ostro (Esperanto) comes from English oyster, from Middle English oystre, from Anglo-Norman oistre, from Old French oistre, from Latin ostrea, from Ancient Greek ὄστρεον — bivalve; oyster; purple pigment, probably that...

ostro (Esperanto): oyster

Definitions

  1. oyster

Ancestry of “ostro”, step by step

ostro traces back through two separate lines of ancestry.

via English oyster

StepLanguageWordMeaning
1EnglishoysterAny of certain marine bivalve mollusks,...
2Middle EnglishoystreAn oyster or a similar shellfish
3Anglo-Normanoistreoyster
4Old Frenchoistreoyster
5Latinostreaoyster, mussel
6Ancient Greekὄστρεονbivalve; oyster; purple pigment, probably that...

via German auster

StepLanguageWordMeaning
1Germanausteroyster
2Middle Low Germanūster—
3Middle Dutchoester—
Every word from Ancient Greek ὄστρεον →Every word from Latin ostrea →Every word from Old French oistre →