takeoff phase
nounUK /ˈteɪkɒf feɪz/
US /ˈteɪkɔːf feɪz/
The part of a flight when the airplane leaves the ground and goes up into the sky.
During the takeoff phase, the plane tilted upward and the ground fell away below us.
OTHER MEANINGS
2. The early stage of a project or business when it starts to grow quickly.
The company's takeoff phase brought in its first big investors.
3. The moment a rocket leaves its launch pad.
Engineers watched the rocket's takeoff phase from a safe distance.
4. A beginning stage of any activity that is gaining speed.
The team is still in the takeoff phase of its training.