Etymology

thornstone

T1H4O1R1N1S1T1O1N1E1

Today it means: A deposit of calcium compounds in the process of graduating brine. Full definition →

German Dornstein
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The story

  1. German · calque ofDornstein
  2. English todaythornstone

Calque of German Dornstein, equivalent to thorn + stone.

Etymology from Wiktionary, CC BY-SA 4.0.