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Definition of mainboard
mainboard
/ˈmeɪn.bɔːrd/
main · board
Plural:mainboards
mainboard Lexical Profile
CEFR
B2
Grade
8
Tier
2
Usage
Rare
Syllables
2
mainboard Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
The primary printed circuit board in a computer or other complex electronic device that holds the central processing unit, memory, and connectors for additional peripherals.
Example
"The technician replaced the faulty mainboard to restore power to the desktop computer."
Synonyms
View all synonyms for mainboard Antonyms
View all antonyms for mainboard• Rhymes for mainboard
Cite this Entry
Wordmom. (2026). Definition of Mainboard. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/mainboard