Illustration of disk
- disk 3 D
variants
or disc
plural disks or discs
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 disc
disked or disced; disking or discing; disks or discs
: to cultivate with an implement (such as a harrow or plow) that turns and loosens the soil with a series of discs
Examples of disk in a Sentence
Recent Examples on the Web
Big Think, 11 Feb. 2026
Ailsa Craig blue hone is commonly used for the running surface; manufacturers cut a circle out of the bottom of the main rock and insert a disk of blue hone.
—Andrea Thompson, Scientific American, 10 Feb. 2026
During these events, the smaller lunar disk passes in front of the sun, occulting most of its surface, while leaving a sliver of its outer rim on show.
—Anthony Wood, Space.com, 10 Feb. 2026
After he was drafted by the Charlotte Bobcats, Okafor played 10 years in the NBA and saw his career cut short by a herniated disk in his neck.
—Joe Arruda, Hartford Courant, 9 Feb. 2026
See All Example Sentences for disk
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show current usage.
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Noun
There’s a dusty cloud surrounding the central, contracting star, and that cloud is strongly suspected to be disk-like, with outflows and gaps in the dust in the two directions perpendicular to the disk.
—Big Think, 11 Feb. 2026
Ailsa Craig blue hone is commonly used for the running surface; manufacturers cut a circle out of the bottom of the main rock and insert a disk of blue hone.
—Andrea Thompson, Scientific American, 10 Feb. 2026
During these events, the smaller lunar disk passes in front of the sun, occulting most of its surface, while leaving a sliver of its outer rim on show.
—Anthony Wood, Space.com, 10 Feb. 2026
After he was drafted by the Charlotte Bobcats, Okafor played 10 years in the NBA and saw his career cut short by a herniated disk in his neck.
—Joe Arruda, Hartford Courant, 9 Feb. 2026
See All Example Sentences for disk
Cite this Entry
“Disk.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/disk. Accessed 16 Feb. 2026.
Copy CitationKids Definition
disk
1 of 2 noun
variants
or disc
1
a
: the central part of the flower head of a typical plant (as a daisy or aster) of the composite family made up of closely packed tube-shaped flowers
b
: any of various rounded and flattened animal anatomical structures
especially
: intervertebral disk
2
: a thin circular object: 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
c
: CD
d
3
usually disc
: a tilling implement (as a plow) with sharp-edged circular cutting blades
also
: one of these blades
disk
2 of 2 verb
variants
or disc
: to cultivate (land) with a disc
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