Invisible ink

noun

Word Frequency: 0.1

Definitions

1.nounAn ink, invisible on application or soon thereafter, that can later be rendered visible by some process, such as exposing it to heat.

2.nounAn ink used in pranks that is visible at first but soon disappears.

The Daily Word NerdA new word, a puzzle, and a fun fact — free in your inbox every morning.

Free forever · unsubscribe anytime · all 14 newsletters

That email did not go through — please check it and try again.