liftoff

from WordNet (r) 3.0 (2006)
liftoff
    n 1: the initial ascent of a rocket from its launching pad
    
from The Collaborative International Dictionary of English v.0.48
liftoff \liftoff\ n. (Rocketry)
   the initial ascent of a rocket from its launching pad.
   [WordNet 1.5]
    

[email protected]