Origin of vac
Examples from the Web for vac
She might or might not have her vac suit on; I knew she had several of them on Ceres.A Spaceship Named McGuire|Gordon Randall Garrett
But on the moon nobody responds to an emergency call without a vac suit.
I carried it back with me when I returned to Garside after vac.The Hero of Garside School|J. Harwood Panting
There was plenty of air still in this corridor, and there was apparently little likelihood of his needing his vac suit.
That evening he heard the Winchester boys making plans for the winter sports at Pontresina in the Christmas vac.A Boswell of Baghdad|E. V. Lucas