wa·​fer | \ ˈwā-fər How to pronounce wafer (audio) \
plural wafers

Definition of wafer

 (Entry 1 of 2)

1a : a thin crisp cake, candy, or cracker
b : a round thin piece of unleavened bread used in the celebration of the Eucharist
2 : an adhesive disk of dried paste with added coloring matter used as a seal
3a : a thin disk or ring resembling a wafer and variously used (as for a valve or diaphragm)
b : a thin slice of semiconductor (such as silicon) used as a base for an electronic component or circuit


wafered; wafering\ ˈwā-​f(ə-​)riŋ How to pronounce wafer (audio) \

Definition of wafer (Entry 2 of 2)

transitive verb

1 : to seal, close, or fasten with a wafer
2 : to divide (something, such as a silicon rod) into wafers

Other Words from wafer


wafer-like \ ˈwā-​fər-​ˌlīk How to pronounce wafer (audio) \ or less commonly waferlike adjective
wafer-like cookies a wafer-like electronic sensor

Examples of wafer in a Sentence

Recent Examples on the Web: Noun Fruity cereal Kit-Kats were one-note boring sugar wafer sticks. Hallie Lieberman, Smithsonian Magazine, 18 Apr. 2022 To back up those deals, among others, Foxconn has made investments in related wafer technology, says Liang. Ralph Jennings, Forbes, 28 Jan. 2022 One wafer can hold thousands of chips in row after row that are cut into individual pieces. Sean Mcdonnell, cleveland, 14 Apr. 2022 This gives both actors license to dip into their physical comedy toolbox with more engaging results, even if the sketch is wafer-thin. David Rooney, The Hollywood Reporter, 28 Mar. 2022 But this time around, for its Cape Cod model, the French house found creative inspiration from an unusual source—a type of silicon wafer used in microelectronic semiconductors. Paige Reddinger, Robb Report, 18 Feb. 2022 If the transistors are arranged correctly, they get punched out of the wafer and packaged as individual chips that might measure as little as 10 millimeters across, roughly the width of a fingernail. Nicolás Rivero, Quartz, 21 Jan. 2022 The cake is layered with pudding, bananas and crumbled vanilla wafer cookies, then frosted and topped with more cookies and bananas. Washington Post, 5 Apr. 2021 Micro-OLED screens do not require color filters, as they’re deposited directly on the chip wafer. Chris Smith, BGR, 24 Feb. 2022 Recent Examples on the Web: Verb Highly energy efficient and often wafer thin, OLEDs are the technology of choice in high-end cellphone displays and televisions. New York Times, 27 Mar. 2022 The bottom of a L’industrie pie — wafer thin but still somehow pliable — is a miracle of engineering. New York Times, 17 Dec. 2021 Historic wafering iron designs indicate that, like today, the irons could be given as wedding gifts. Kat Eschner, Smithsonian, 29 June 2017 See More

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

First Known Use of wafer


14th century, in the meaning defined at sense 1a


1748, in the meaning defined at sense 1

History and Etymology for wafer


Middle English, from Anglo-French wafer, walfre, of Germanic origin; akin to Middle Dutch wafele waffle

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Time Traveler for wafer

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The first known use of wafer was in the 14th century

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Dictionary Entries Near wafer



wafer ash

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Statistics for wafer

Last Updated

8 May 2022

Cite this Entry

“Wafer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/wafer. Accessed 17 May. 2022.

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More Definitions for wafer


wa·​fer | \ ˈwā-fər How to pronounce wafer (audio) \

Kids Definition of wafer

: a thin crisp cake or cracker


wa·​fer | \ ˈwā-fər How to pronounce wafer (audio) \

Medical Definition of wafer

: cachet

More from Merriam-Webster on wafer

Nglish: Translation of wafer for Spanish Speakers

Britannica English: Translation of wafer for Arabic Speakers

Britannica.com: Encyclopedia article about wafer


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