invisible ink
Frequency: 5.83.0 per million words
Ink that only becomes visible under certain conditions (e.g., heat or UV light).
Categories:
Examples (10)
- Secret messages were often written with invisible ink during wartime.
- He used invisible ink to mark the secret map.
- Children love playing detective with special pens that write in invisible ink.
- The document was seemingly blank, but contained hidden text in invisible ink.
- To reveal the message, you need to apply heat to the paper written with invisible ink.
- She discovered a diary entry written in invisible ink only when she held it near a lamp.
- Modern security features sometimes utilize invisible ink that glows under UV light.
- The spy communicated using coded messages and invisible ink.
- Learning about invisible ink in science class was fascinating for the students.
- Could this old letter contain secrets written in invisible ink?