(biology) Alternative form of germinal disk

(astronomy) A trans-Neptunian region of the Solar System that overlaps the outer edge of the Kuiper belt, but also extends far beyond it, and is populated sparsely by small Solar System bodies.

Alternative spelling of flippy disk

Alternative form of Alderson disk

A modern data storage medium consisting of a flat disc read mechanically by illumination with laser light. Formats include the Laserdisc, compact disc, DVD, and Blu-ray.

(agriculture) A harrow comprising a series of angled discs

plural of disc harrow

(sports) A sport (game) in which players take turns to throw a disc (“frisbee”) on a course to eventually reach a goal (target, netting) attempting to reach the target, and then hit it with as few throws as possible. An analogue of golf using a disc (frisbee) instead of a ball, and throws instead of swings of golf clubs.

(anatomy) The location where ganglion cell axons exit the eye to form the optic nerve.

(pathology) A vertebral disc that protrudes into the spinal canal, exerting pressure on spinal nerves and causing backache or sciatica.