| An isogram is a word in which the letters turn up an equal number of times. |
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| In a first-order isogram, each letter appears just once, as in dialogue. |
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| But to the linguist, Wilmcote is a first-order isogram. |
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| An isogram is a word in which every letter appears the same number of times. |
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| The word features all five major vowels, almost in order, and remains an isogram with a sixth vowel in ambidextrously. |
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| Because of the potentially large number of plural and possessive names, this type of pair isogram has been excluded. |
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| In a third-order isogram, each letter appears three times. |
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