wafer

1 of 2

noun

wa·​fer ˈwā-fər 

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

ˈwā-fər-ˌlīk 

adjective

or less commonly waferlike

wafer-like cookies

a wafer-like electronic sensor

wafer

2 of 2

verb

wafered; wafering ˈwā-f(ə-)riŋ 

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

Instead, the fab is in pilot production, making sample wafers and sending them to customers for verification. —Katie Tarasov, CNBC, 13 Dec. 2024

Intel has pioneered new materials technologies, transistor designs, lithography solutions, wafer sizes, packaging solutions, interconnects, system designs, and so much more. —Jim McGregor, Forbes, 4 Dec. 2024

Verb

This is often called polycrystalline silicon, in contrast to the monocrystalline (single crystals) wafers that semiconductors are made on. —Willy Shih, Forbes, 13 Oct. 2024

But a traditional creamy trifle will feature layers of bananas, a vanilla pudding or custard, Nilla wafers (daring heretics might use sponge cake) and then whipped cream or even a meringue. —Cnn.com Wire Service, The Mercury News, 26 Sep. 2024

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

Phrases Containing wafer

• wafer-thin

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 

: cachet