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 That achievement is made possible because the light from the disk is partly polarized, vibrating more in one direction than in others. New York Times, "The Most Intimate Portrait Yet of a Black Hole," 24 Mar. 2021 Using a food processor fitted with a coarse shredding disk, grate the potatoes and onions. Washington Post, "Crisp, golden potato kugel can be the highlight of your Passover table, or any other meal," 16 Mar. 2021 Shunan pulls just the right amount of tea leaves from the circular disk of tea (called pu’erh) to add to a glass or clay teapot. Michael Alpiner, Forbes, "The Path Of Restorative Travel Starts With Tea," 26 Feb. 2021 Secure the growing medium in the pot with a cardboard disk or newspaper to prevent it from falling out while the pot is upside down. Tim Johnson, chicagotribune.com, "Aphid infestation on your houseplants? Here’s how to get rid of the insects and their sticky residue," 20 Feb. 2021 Once the driver is done working, it gets wiped from the disk again. Lily Hay Newman, Wired, "A Windows Defender Vulnerability Lurked Undetected for 12 Years," 11 Feb. 2021 Meanwhile, using a food processor fitted with the thin slicing disk, thinly slice the cabbage and transfer to a bowl. Kate Merker, Good Housekeeping, "Soba Noodle Salad With Shrimp and Ginger Vinaigrette," 20 Jan. 2021 To uncover the physical principles at work, the researchers used a robotic system with a round glass disk, mimicking the tip of the feline tongue, that could be placed on a liquid surface and rapidly pulled upward [see video below]. John Matson, Scientific American, "Cat Lap: Engineers Unravel the Mystery of How Felines Drink," 11 Nov. 2010 This new image, above, shows M106’s tenuous outer reaches, its warped central disk and some bright red streamers of gas at its heart. Jamie Carter, Forbes, "In Photos: Our Best View Yet Of A Glowing Galaxy Near The ‘Big Dipper’ That Hides A Supermassive Secret," 18 Mar. 2021 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

10 Apr 2021

Cite this Entry

“Disk.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/disk. Accessed 11 Apr. 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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More from Merriam-Webster on disk

Thesaurus: All synonyms and antonyms for disk

Nglish: Translation of disk for Spanish Speakers

Britannica English: Translation of disk for Arabic Speakers

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