Wiktionary
repulsor beam
n. (context science fiction English) device used to repel other objects.
Usage examples of "repulsor beam".
If they can get to a planetary repulsor in time, and if they can figure out how to run it, and if they can jam that hyperspace tractor-repulsor beam, then maybe we can save some lives.
I would have known where to direct the repulsor beam, and precisely when to fire.
Now that the car was out of the main tube and Pressor's trap, it had been grabbed by the branch tube's normal repulsor beam and was being pulled sedately downward toward the storage core.