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
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
Tim Stevens, Ars Technica, 6 Jan. 2025
Following a degenerative disc disease diagnosis, an employee at a subsidiary of Black & Decker applied for long-term disability coverage.
—Natalie Eilbert, Journal Sentinel, 19 Dec. 2024
Which leaves it as one of the only periods of recorded music where many classic albums were never released on vinyl, with major record labels opting instead for now antiquated formats like mini disc or cassettes alongside the almighty CD.
—Jim Ryan, Forbes, 19 Dec. 2024
The brand’s full assortment, which currently entails a benzoyl peroxide mask, a mandelic acid serum, frozen toner discs and a hydrating cleanser, will debut digitally on the retailer’s website on Dec. 26.
—James Manso, WWD, 19 Dec. 2024
See all Example Sentences for disc 
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Noun
These machines, called electromechanical (EM), instead rely on a series of discs and circuits to control the game's logic.
—Tim Stevens, Ars Technica, 6 Jan. 2025
Following a degenerative disc disease diagnosis, an employee at a subsidiary of Black & Decker applied for long-term disability coverage.
—Natalie Eilbert, Journal Sentinel, 19 Dec. 2024
Which leaves it as one of the only periods of recorded music where many classic albums were never released on vinyl, with major record labels opting instead for now antiquated formats like mini disc or cassettes alongside the almighty CD.
—Jim Ryan, Forbes, 19 Dec. 2024
The brand’s full assortment, which currently entails a benzoyl peroxide mask, a mandelic acid serum, frozen toner discs and a hydrating cleanser, will debut digitally on the retailer’s website on Dec. 26.
—James Manso, WWD, 19 Dec. 2024
See all Example Sentences for disc
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Dictionary Entries Near disc
Cite this Entry
“Disc.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/disc. Accessed 18 Jan. 2025.
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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