Used attributively in aerospace contexts (e.g., “liftoff velocity”).
Définitions
Relating to or occurring at the moment a spacecraft leaves the ground; pertaining to launch. Engineers monitored the liftoff temperature of the booster.
Exclamation announcing that launch has begun.
Définitions
An exclamation announcing that a launch has commenced. "Liftoff! We have liftoff," the announcer declared as the rocket rose.