noun, often attributive
\ ˈdisk How to pronounce disk (audio) \
variants: or

Definition of disk

 (Entry 1 of 2)

1a : the seemingly flat figure of a celestial body the solar disk
b archaic : discus
2 : any of various rounded and flattened animal anatomical structures especially : intervertebral disk — compare slipped disk
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
c usually disc : optical disk: such as
(1) : videodisc
(2) : cd
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

Definition of disk (Entry 2 of 2)

transitive verb

: to cultivate with an implement (such as a harrow or plow) that turns and loosens the soil with a series of discs

Illustration of disk

Illustration of disk


disk 3 D

In the meaning defined above

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Other Words from disk


disklike \ ˈdisk-​ˌlīk How to pronounce disk (audio) \ adjective

Examples of disk in a Sentence

Recent Examples on the Web: Noun Wrap the disk tightly and flatten it to an even thickness. Jessica Battilana, SFChronicle.com, "This savory meat pie is a cheery indulgence for Christmas Eve," 18 Dec. 2020 Earth’s outer, pale shadow is falling on 80 percent of the lunar disk, making that part of the moon appear noticeably darkened. Frans Lanting, National Geographic, "Dinosaurs for dinner?," 25 Nov. 2020 The disk blasted the tips off of the cones and launched them outward; one is hurtling toward Earth at about 250 miles per second. Theresa Machemer, Smithsonian Magazine, "Astronomers Crack the Case of the Blue Ring Nebula," 23 Nov. 2020 Earlier this month, 18 interested buyers got into a bidding war for a large, gray disk engraved and painted with 322,048 digits of code. NBC News, "How blockchain technology reached Christie's and changed the art world along the way," 27 Oct. 2020 The drivetrain consists of everything from the engine to the drive wheels, and the transmission (flywheel, clutch disk, pressure plate, throw-out bearing, slave cylinder) is part of it. Bob Weber, Star Tribune, "Motor Mouth: Is it time to shift to a car with an automatic?," 9 Oct. 2020 The large dust-collection bag pulls air through eight holes in the sanding disk, which makes short work of messy projects. Popular Science, "Reliable random orbital sanders for your workshop," 9 Oct. 2020 Thursday Tokyo time, a magnetic-disk device used to store trading information malfunctioned, and a switchover to a backup device didn’t work, the exchange said. Chieko Tsuneoka, WSJ, "Tokyo Stock Exchange Sets Restart After Daylong Shutdown," 1 Oct. 2020 Players take turns telling stories from their lives based on the prompts from the disk (first job, best pet, last trip). Star Tribune, "These new and old family games are perfect for Zoom," 18 Dec. 2020 Recent Examples on the Web: Verb The soil can be disked, but preparation is not necessary if the seed is placed in full sun and makes contact with the soil. Calvin Finch, ExpressNews.com, "Fall blooms to attract butterflies and hummingbirds to your San Antonio garden," 13 Sep. 2019 Quick tip: State biologists enhance turkey habitat at wildlife management areas by planting winter food, such as wheat, alfalfa or rye grass, and renewing plant succession by burning or disking. Brian Lovett, Outdoor Life, "The 2020 Spring Turkey Hunting State-by-State Forecast," 3 Feb. 2020 Size: Disk up to 0.7 inch (1.7 centimeters) wide; stalk up to 0.3 inch (0.8 centimeter) tall IUCN Red List Status: National Geographic, "8 Real-Life ‘Fantastic Beasts’ and Where to Find Them," 18 Nov. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'disk.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of disk


1664, in the meaning defined at sense 1a


circa 1884, in the meaning defined above

History and Etymology for disk


Latin discus — more at dish

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Statistics for disk

Last Updated

16 Jan 2021

Cite this Entry

“Disk.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/disk. Accessed 18 Jan. 2021.

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More Definitions for disk


variants: or disc \ ˈdisk \

Kids Definition of disk

1 : something that is or appears to be flat and round
2 usually disc : cd
3 : a round, thin, flat plate coated with a magnetic substance on which data for a computer is stored
4 usually disc : a phonograph record

Other Words from disk

disklike \ -​ˌlīk \ adjective


variants: or disc \ ˈdisk How to pronounce disk (audio) \

Medical Definition of disk

: any of various rounded or flattened anatomical structures: as
a : a mammalian blood cell

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Comments on disk

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