first stage

So much for "first-stage" nationalist developments in the Arab or Arabized lands.

For an instant he couldn't recall what had happened, then he realized he had survived the first-stage acceleration.

The rocket was programmed to reach twelve G during first-stage flight—twelve times the force of gravity!

Just a feeble imitation of the first-stage detonator for what we'll have to have to crack the Stretts' ground-based screens.

Beam clung to screen—caressingly, hungrily—absorbing its total energy and forming the first-stage booster.