Astronomers on the ground had seen only the clumps and assumed they were incomplete rings, something no other planet had.

Surrounding the central edifice is an incomplete ring of fractures.

The incomplete outer ring is near the moon 1989 N4.

It has a more or less complete or incomplete black ring about the neck.

"Annular" means formed as a ring and "penannular" formed as an incomplete ring; both terms have a range of uses.

He saw an incomplete ring of satellites, ineffective weather observers that the Guild had grudgingly put into orbit after years of insistence from the Baron himself.

There are 13-15 circumorbital scales with an incomplete outer ring of 13-17 scales.

Voyager 2 found four rings and evidence for ring arcs, or incomplete rings above Neptune.

But they seem to form incomplete rings, with clumps of material in a broken circle.

Voyager 2 also found four rings and found proof for ring arcs, or incomplete rings around Neptune.