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definitions

sympathetic ink

noun

a fluid for producing writing that is invisible until brought out by heat, chemicals, etc.; invisible ink.

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Nearby words

  1. sympathetic,
  2. sympathetic amine,
  3. sympathetic contact,
  4. sympathetic ganglia,
  5. sympathetic imbalance,
  6. sympathetic introspection,
  7. sympathetic magic,
  8. sympathetic nerve,
  9. sympathetic nervous system,
  10. sympathetic ophthalmia

Origin of sympathetic ink

First recorded in 1715–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for sympathetic ink

sympathetic ink

noun

another term for invisible ink
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