0 Rimless glasses do not have a rim (= an outer edge made from a different material):
rimless spectacles
His eyes were concealed by thick, rimless spectacles.
She was dressed in a sleeveless black waistcoat and rimless sunglasses.
I am sure that a rimless cartridge would be an enormous advantage over the present.
My glasses are supposed to be rimless.
As the cartridge is rimless, the cylinder is fed via full moon clips.
This variety was manufactured as either a frame or as a two-piece mount for rimless.
Bottle-necked rimless cartridges may headspace on the conical shoulder between the narrow neck and the larger diameter portion of the case.