disc

plural discs · alternative US disk

1. A thin, flat, circular plate or similar object.

   A coin is a disc of metal.

   1 more example

   ; the top one is acted on by the spindle and disc d, moved by the lever e;

   1847, editorial staff, “Improvement in Water Taps, Cister Valves, &c. ”, in Scientific American, series 1, Volume 3, Issue 9, page 68

2. anatomyAn intervertebral disc.
3. Something resembling a disc.

   Venus's disc cut off light from the Sun.

   1 more example

   [A] peculiar luminous and sinuous marking appeared on the unillumined half of the inner planet, and almost simultaneously a faint dark mark of a similar sinuous character was detected upon a photograph of the Martian disc.

   1898, H.G. Wells, The War of the Worlds, London: William Heinemann, page 300

4. A vinyl phonograph or gramophone record.

   Turn the disc over, after it has finished.

5. biologyThe flat surface of an organ, as a leaf, any flat, round growth.
6. abbreviationellipsisdisc sportsEllipsis of flying disc; synonym of frisbee; generic name for the trademark Frisbee.
7. alternativeAlternative form of disk

present singular third person discs · participle present discing · participle past disced · past disced · alternative US disk

1. agricultureTo harrow with a disc harrow.

   It is held that discing is as much value to lucerne as cultivation is to corn.

   1901 October 11, “Discing Lucerne”, in The Agricultural Journal and Mining Record, volume 4, number 16, page 488

2. aeronauticsTo move towards, or operate at, zero blade pitch, orienting the propeller blades face-on to the oncoming airflow and maximizing the drag generated by the propeller.

   In the air, the asymmetric drag generated by a discing propeller can result in loss of control of the airplane.

1. abbreviationacronymAcronym of dominance, inducement, submission, and compliance, a type of personality test.