covertlaunch
nounUK /ˈkʌvət lɔːntʃ/
US /ˈkoʊvərt lɔːntʃ/
A secret start of something, like a rocket or a plan, that people do not know about.
The spies planned a covertlaunch of the small drone at night.
OTHER MEANINGS
2. A hidden beginning of a new product or project.
The company did a covertlaunch of its new app to test it quietly.
3. A surprise start of a mission kept secret from others.
The team's covertlaunch of the rescue mission caught everyone off guard.
4. A secret send-off of a spacecraft or vehicle.
The military's covertlaunch of the satellite was not shown on the news.