circuit board
Americannoun
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Electronics. a sheet made up of layers of conductive and insulating material used for the mounting and interconnection, often by a printed circuit, of components in electronic equipment.
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Also called card. Computers. a piece of fiberglass or other material upon which chips can be mounted to perform specific functions.
noun
Etymology
Origin of circuit board
First recorded in 1945–50
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Li taught himself computer programming and learned how to design a circuit board.
From Barron's • Jan. 29, 2026
You can get an incredibly high-quality prototype circuit board and enclosure in less than a week.
From The Wall Street Journal • Nov. 8, 2025
Now the retired director of photography is fielding orders for the BlueChirper after teaching himself how to make a circuit board that can emit the annoying sound and flash a blue light.
From Los Angeles Times • May 29, 2025
The single most important piece of evidence from the case was a thumbnail-sized fragment of circuit board, found embedded in the neck band of a shirt from the suitcase that held the bomb.
From BBC • Jan. 14, 2025
In shop, Yolanda has her head down low over her circuit board and doesn’t look up when I take my seat next to her.
From "A Good Kind of Trouble" by Lisa Moore Ramée
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
