noun, often attributive
\ˈdisk \
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

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 \-ˌlīk \ adjective

Examples of disk in a Sentence

Recent Examples on the Web: Noun

The squat monstrosity had a spring-lever arm to launch clay disks, replicating a bird’s flight. Liz Arnold, Longreads, "Making Peace with the Site of a Suicide," 11 July 2018 Astronomers aren’t sure how this thick disk came about. Ramin Skibba, WIRED, "This Galactic Collision Shaped the History of the Milky Way," 8 July 2018 The balls were squeezed in between rubber disks raked over the ground. Dawn Mitchell, Indianapolis Star, "RetroIndy: Little America and Wonderland kiddie park," 15 June 2018 So American disks cost a net 18 percent extra, all other costs being equal. Joseph N. Distefano, Philly.com, "An old trade warrior cheers for Trump," 4 June 2018 That stiff white disk will never dissolve, leaving hard, sugary pockets where mousselike suppleness should reign. Melissa Clark, New York Times, "An Icebox Cake Casts Its Spell on Strawberries," 25 May 2018 For many years, astronomers believed the Milky Way's disk spanned about 100,000 light-years. David Freeman /, NBC News, "The Milky Way galaxy may be much bigger than we thought," 25 May 2018 Falafel platter from Greek Village: falafel disks served on pita with tahini sauce, plus fries. Nancy Stohs, Milwaukee Journal Sentinel, "Summerfest's new menu items include bacon cannoli, tater tot poutine and 'walking nachos'," 17 May 2018 There are no menus, no updates, no settings, no disk or SD card to fill up, no Internet, no distractions. Andrew Cunningham, Ars Technica, "How to make your old Game Boy as good as (or better than) new," 24 Apr. 2018

Recent Examples on the Web: Verb

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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Phrases Related to disk

intervertebral disc

slipped disc

tax disc

Statistics for disk

Last Updated

13 Oct 2018

Look-up Popularity

Time Traveler for disk

The first known use of disk was in 1664

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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 \

Medical Definition of disk 

: any of various rounded or flattened anatomical structures: as

a : a mammalian blood cell

b : blind spot

c : intervertebral disk — see slipped disk

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Comments on disk

What made you want to look up disk? Please tell us where you read or heard it (including the quote, if possible).


exaggeratedly or childishly emotional

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