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invisible ink

noun
Origin of invisible ink
1675-1685
1675-85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for invisible ink
Contemporary Examples
Historical Examples
  • It was a time of invisible ink, and Franklin instructed this committee how to use it.

    True to His Home Hezekiah Butterworth
  • Then she happened to remember that there was such a thing as invisible ink.

    The Million Dollar Mystery Harold MacGrath
  • He was, however, given a short, unsigned note in invisible ink for Count Nesselrode.

    Talleyrand Joseph McCabe
  • You might have it treated with invisible ink, or write something else in, up above.

    Wunpost Dane Coolidge
  • Therefore you make those alterations with the invisible ink, and let it remain so.

  • "There may be writing on it with invisible ink," said one of his comrades.

    Peveril of the Peak Sir Walter Scott
  • We always write our most secret doings in invisible ink, made of lemon juice, so that nobody can read about them.

    The Boy Scouts of Bob's Hill Charles Pierce Burton
  • Lafayette took the hint, and discovered the message written with this invisible ink on the bit of paper.

    Lafayette Martha Foote Crow
British Dictionary definitions for invisible ink

invisible ink

noun
1.
a liquid used for writing that does not become visible until it has been treated with chemicals, heat, ultraviolet light, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Difficulty index for invisible ink

Few English speakers likely know this word

Word Value for invisible

14
18
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