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English definition of “invisible ink”

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invisible ink

noun [U] uk   us  
ink that cannot be seen until it is treated with chemicals or heat: It's a secret message written in invisible ink.
Translations of “invisible ink”
in Chinese (Traditional) 隱形墨水…
in Chinese (Simplified) 隐形墨水…
(Definition of invisible ink from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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