variant spelling of disk
1
a
: the seemingly flat figure of a celestial body
the solar disk
b
archaic
: discus
2
usually disc
: any of various rounded and flattened animal anatomical structures
especially
: intervertebral disc see also slipped disc
3
: the central part of the flower head of a typical composite made up of closely packed tubular flowers
4
: a thin circular object: such as
a
usually disc
: a phonograph record
b
: a round flat plate coated with a magnetic substance on which data for a computer is stored
d
usually disc
: a rotor in a disc brake
5
usually disc
: one of the concave circular steel tools with sharpened edge making up the working part of a disc harrow or plow
also
: an implement employing such tools
variants
or disci-
or disco-
1
: disk
discoid
2
: phonograph record
discophile
Examples of disc in a Sentence
Recent Examples on the Web
Charlie Fink, Forbes.com, 30 Jan. 2026
Front disc brakes became standard in 1959, with all-wheel discs from 1962 onward.
—Robert Ross, Robb Report, 30 Jan. 2026
Berliner opted for the disc format over Edison’s cylinder, which made the engraving step much less difficult.
—Kurt Snibbe, Oc Register, 30 Jan. 2026
The North Carolina native appeared to reference bowing out of a potential feud with Kendrick Lamar and the backlash from it re-energizing him creatively, which led to a second disc for The Fall-Off and the aforementioned album cover.
—Michael Saponara, Billboard, 29 Jan. 2026
See All Example Sentences for disc
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Noun
The device is described as a circular aluminum and glass disc with microphones, cameras, a speaker, and a physical button, designed to work with a future LLM powered version of Siri.
—Charlie Fink, Forbes.com, 30 Jan. 2026
Front disc brakes became standard in 1959, with all-wheel discs from 1962 onward.
—Robert Ross, Robb Report, 30 Jan. 2026
Berliner opted for the disc format over Edison’s cylinder, which made the engraving step much less difficult.
—Kurt Snibbe, Oc Register, 30 Jan. 2026
The North Carolina native appeared to reference bowing out of a potential feud with Kendrick Lamar and the backlash from it re-energizing him creatively, which led to a second disc for The Fall-Off and the aforementioned album cover.
—Michael Saponara, Billboard, 29 Jan. 2026
See All Example Sentences for disc
Cite this Entry
“Disc.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/disc. Accessed 1 Feb. 2026.
Copy CitationMedical Definition
disc
noun
variants
or disk
: any of various rounded or flattened anatomical structures: as
a
: a mammalian blood cell
b
c
: intervertebral disc see also slipped disc
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