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einstein

The English word “einstein” has 4 meanings listed here.

noun

  1. One mole of photons, regardless of frequency, as used to measure irradiance.
  2. A genius; a very smart person.
  3. An idiot; a very stupid person.
  4. A shape that can be repeated to cover a plane with a nonrepeating pattern.

Etymology

Named in honor of Albert Einstein, who explained the photoelectric effect.

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.