Can mean different things.
Often these are for raw edge applique. A regular pattern will be just paper. You get the fabric, iron on the fusible and use the paper patterns to draw the pieces on then cut them out yourself. A laser cut pattern is fabric all ready cut. The fusible has been applied to the fabric and then cut with a laser, so you just fuse them on.
Some companies offer laser cutting of fabric for specific quilt tops, like a DWR. I think John Flynn offers this service.
And finally, some sites offer laser cut acrylic templates. These are just regular acrylic templates that have been cut with a laser, often with guidelines etched in.