invisible ink 1

noundomain: substance
EnWordnet [ver.5.0]
EnglishEnglish
Definition

a substance used for writing, which is invisible either on application or soon thereafter, and can later be made visible by some means.

  • 1.Using either ultraviolet light or an iodine fume cupboard, messages can be quickly screened for invisible ink and also read without first permanently developing the invisible ink.
  • a substance used for writing, which is invisible either on application or soon thereafter, and can later be made visible by some means.

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