Etymology

Planck

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Today it means: Used attributively in the names of various units, formulae etc. first devised or worked on by the German physicist Max Planck (1858–1947), chiefly in the realm of quantum theory. Full definition →

First used 20th c.German Planck
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The story

  1. German · borrowed fromPlanck
  2. German · borrowed fromPlanck
  3. English todayPlanck

Borrowed from German Planck.

First known use, by meaning

  • from 20th c. Used attributively in the names of various units, formulae etc. first devised or worked on by the German physicist Max Planck (1858–1947), chiefly in the realm of quantum theory.

Etymology from Wiktionary, CC BY-SA 4.0.