einstein
Noun
One mole of photons, regardless of frequency, as used to measure irradiance.
Usage- Dated
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The einstein (symbol E) is an obsolete unit with two conflicting definitions.
A genius; a very smart person.
Usage- Informal
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He's a prodigy — they call him their little einstein.
A genius; a very smart person. An idiot; a very stupid person.
Usage- broadly
- Informal
- sarcastic
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Yeah, that guy is a real einstein — he always finds a way to mess up the simplest order.
Noun
A shape that can be repeated to cover a plane with a nonrepeating pattern.
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More examples (1)
In less poetic terms, an einstein is an “aperiodic monotile,” a shape that tiles a plane, or an infinite two-dimensional flat surface, but only in a nonrepeating pattern. (The term “einstein” comes from the German “ein stein,” or “one stone” — more loosely, “one tile” or “one shape.”)
Word forms
einsteins