로켓이나 우주선 등이 지면이나 발사대에서 수직으로 떠오르는 순간 또는 과정.
The moment or process of a rocket, spacecraft, or aircraft leaving the ground or a launch pad, typically vertically.
예문:
"The mission control center confirmed a successful liftoff at exactly 9:00 AM."
"Spectators gathered near the Cape Canaveral site to witness the historic liftoff of the Mars probe."
"The heavy-lift rocket experienced a minor delay just minutes before liftoff."