Examples from the Web for pressor
Tractor and pressor beams were known to men, of course, but human beings used them only under very special conditions.
Along that pressor beam there crept a dull red rod of energy, which surrounded the fugitive shell and brought it slowly to a halt.Triplanetary|Edward Elmer Smith
It had no beam-projectors except small-sized objects which were—which must be—their projectors of tractor and pressor beams.
They have to aim something—a pressor or tractor beam, most likely—and pick off each rocket separately.
When we fired rockets at them, they turned them back with tractor and pressor beams.