invisible ink Meaning in the Cambridge English Dictionary
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Meaning of “invisible ink” in the English Dictionary

"invisible ink" in British English

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invisible inknoun [U]

uk   us  
ink that cannot be ​seen until it is ​treated with ​chemicals or ​heat: It's a ​secretmessage written in ​invisibleink.
(Definition of invisible ink from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
Translations of “invisible ink”
in Chinese (Simplified) 隐形墨水…
in Chinese (Traditional) 隱形墨水…
What is the pronunciation of invisible ink?
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