isogram

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English

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Etymology

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From iso- +‎ -gram. The "contour line" sense was proposed in 1889 by Francis Galton.[1]

Noun

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English Wikipedia has an article on:
Wikipedia

isogram (plural isograms)

  1. A word in which no letter of the alphabet occurs more than once.
  2. A line on a map or chart, such as a contour line, joining points that have the same value for some quantity.
    Synonyms: isoline, isopleth, isarithm

References

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  1. ^ Norman Joseph William Thrower (1972) Maps and Man‎[1], page 164

Anagrams

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