wafer

1 of 2

noun

wa·​fer ˈwā-fər How to pronounce wafer (audio)
plural wafers
1
a
: 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
3
a
: 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
wafer-like adjective
or less commonly waferlike
wafer-like cookies
a wafer-like electronic sensor

wafer

2 of 2

verb

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

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Littelfuse completed the acquisition of a 200mm wafer fab in Dortmund, Germany, from Elmos Semiconductor SE, with a total purchase price of approximately 94 million Euro. Quartz Intelligence Newsroom, Quartz, 13 Mar. 2025 The three-ingredient treat is not only easy, but can be customized to your tastes using different kinds of melting wafers or chocolate chips. Alana Al-Hatlani, Southern Living, 8 Mar. 2025
Verb
Puffs Cereal is made with real OREO cookie wafers to bring the iconic taste of OREO to your cereal bowl. Ross Rosenfeld, Newsweek, 26 Feb. 2025 Germanium substrates wafers at a Umicore facility in Olen, Belgium. Maddie Stone, WIRED, 15 Feb. 2025 See All Example Sentences for wafer

Word History

Etymology

Noun

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

First Known Use

Noun

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

Verb

1748, in the meaning defined at sense 1

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

Browse Nearby Words

Cite this Entry

“Wafer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/wafer. Accessed 22 Mar. 2025.

Kids Definition

wafer

noun
wa·​fer
ˈwā-fər
1
a
: a thin crisp cake or cracker
b
: a round thin piece of bread used in the sacrament of Communion
2
: something (as a piece of candy or a computer chip) resembling a wafer especially in thin round form

Medical Definition

wafer

noun
wa·​fer ˈwā-fər How to pronounce wafer (audio)
: cachet

More from Merriam-Webster on wafer

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