motherboard

noun

moth·​er·​board ˈmə-t͟hər-ˌbȯrd How to pronounce motherboard (audio)
: the main circuit board especially of a microcomputer

Examples of motherboard in a Sentence

Recent Examples on the Web
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Sonar’s answer, though, was incorrect, telling me that my motherboard couldn't control my case’s RGB lighting. PC Magazine, 25 Oct. 2025 Expanding opportunity Previous servers typically had one or two processors on a motherboard. Kif Leswing, CNBC, 17 Oct. 2025 This Space Cowboys vibe makes sense because this tech boom looks less like the last one — social apps powered by subway ads and nap pods — than the 1980s PC revolution, powered by tinkerers with motherboards and soldering irons. Liz Hoffman, semafor.com, 14 Oct. 2025 Some laptops are open, revealing their green motherboards. Gabriel J. Sánchez, NPR, 9 Oct. 2025 See All Example Sentences for motherboard

Word History

First Known Use

1971, in the meaning defined above

Time Traveler
The first known use of motherboard was in 1971

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Cite this Entry

“Motherboard.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/motherboard. Accessed 5 Nov. 2025.

Kids Definition

motherboard

noun
moth·​er·​board ˈmət͟h-ər-ˌbō(ə)rd How to pronounce motherboard (audio)
-ˌbȯ(ə)rd
: the main circuit board especially of a personal computer

More from Merriam-Webster on motherboard

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