cloaking device
noun
- fictional technology that renders objects invisible
Wiktionary
noun
Etymology: 1968. Coined by D. C. Fontana in the script for the Star Trek episode The Enterprise Incident.
- A device which renders a person or thing invisible.
“I believe the Romulans have developed a cloaking device which renders our tracking sensors useless.”
“They can't have disappeared. No ship that small has a cloaking device.”