sympathetic ink

noun

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

Nearby words

sympathetic, sympathetic amine, sympathetic contact, sympathetic ganglia, sympathetic imbalance, sympathetic ink, sympathetic introspection, sympathetic magic, sympathetic nerve, sympathetic nervous system, 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