wa·​fer | \ ˈwā-fər \

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 \

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

Examples of wafer in a Sentence

Recent Examples on the Web: Noun

Buprenorphine is already available as a pill and film, but the new version would be a wafer that may dissolve even faster. German Lopez, Vox, "His family helped cause the opioid crisis. Now he might profit from addiction treatment.," 7 Sep. 2018 Malcolm Turnbull, 63 years old, has struggled to pass key parts of his legislative agenda and maintain his authority since elections in 2016 left his coalition with a wafer-thin majority. David Winning, WSJ, "Divisions on Climate Policy Threaten Australia’s Turnbull," 20 Aug. 2018 For heads, place vanilla wafer on each cupcake, flat side down, overhanging edge slightly. The Good Housekeeping Test Kitchen, Good Housekeeping, "Mouse Cupcakes," 27 July 2018 The floors were a mosaic of broken wafers -- all eight of those different colors. Fox News, "Candy company behind Necco Wafers, Sweethearts sold," 23 May 2018 Low-level mechanisms pertain to changes like materials cost, wafer area, module efficiency, and the size of the factory making the panels. Megan Geuss, Ars Technica, "How the falling cost of solar panels can teach us to make new tech affordable," 26 Nov. 2018 Press about 1 tablespoon of dough around each mint wafer, covering it completely. Judy Buchenot, Naperville Sun, "Suburban Cooks: Mints go from trash to treasured cookies," 13 July 2018 The company employed 12,000 people in Boise in the late 1990s, many of whom were blue-collar workers in wafer-fabrication units, known as fabs. David Staats, idahostatesman, "300 Micron engineers work in a 'trailer park.' Here's what Micron is doing about that.," 18 June 2018 Like a wafer or an egg, graphene can shatter easily. David Grossman, Popular Mechanics, "It Just Got Easier to Make Hordes of Blood Cell-Sized Robots All at Once," 23 Oct. 2018

Recent Examples on the Web: Verb

Historic wafering iron designs indicate that, like today, the irons could be given as wedding gifts. Kat Eschner, Smithsonian, "These Beautiful Medieval Wafer Presses Are Where Waffles Come From," 29 June 2017 Historic wafering iron designs indicate that, like today, the irons could be given as wedding gifts. Kat Eschner, Smithsonian, "These Beautiful Medieval Wafer Presses Are Where Waffles Come From," 29 June 2017

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.

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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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Dictionary Entries near wafer





wafer ash

wafer bread

wafer iron

Statistics for wafer

Last Updated

20 Dec 2018

Look-up Popularity

Time Traveler for wafer

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

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More Definitions for wafer



English Language Learners Definition of wafer

: a thin, crisp cracker

: a round, thin piece of bread eaten during the Christian Communion ceremony

: a small, round, thin object


wa·​fer | \ ˈwā-fər \

Kids Definition of wafer

: a thin crisp cake or cracker


wa·​fer | \ ˈwā-fər \

Medical Definition of wafer

: cachet

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More from Merriam-Webster on wafer

Rhyming Dictionary: Words that rhyme with wafer

Spanish Central: Translation of wafer

Nglish: Translation of wafer for Spanish Speakers

Britannica English: Translation of wafer for Arabic Speakers

Britannica.com: Encyclopedia article about wafer

Comments on wafer

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


to settle judicially or to act as judge

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