invisible ink

noun

: ink that can only be seen when it is specially treated in some way
a message written in invisible ink

Examples of invisible ink in a Sentence

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Mark your property: Use invisible ink or engrave your decorations with a unique identifier. Kurt Knutsson, Cyberguy Report, Fox News, 14 Dec. 2024 Voted the second-best city in the world by Condé Nast Traveler readers for 2024, Singapore has a few tenets written in invisible ink. Audrey Phoon, Condé Nast Traveler, 10 Dec. 2024

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Cite this Entry

“Invisible ink.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/invisible%20ink. Accessed 29 Mar. 2025.

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