# motherboard

/ˈməðɝˌbɔɹd/ (US) · /mˈʌðəbˌɔːd/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/motherboard
Updated: 2026-05-08

## Definition

the main circuit board inside a computer. It connects all the important parts like the brain, memory, and other hardware so they can talk to each other.

For teachers: the primary printed circuit board in a computer or other complex electronic system. It houses the central processing unit and memory while providing connectors for other peripherals.

## Examples

- I need to replace the motherboard because the computer won't start.
- When building a custom PC, you must ensure the motherboard is compatible with your chosen processor and case size.
- The technician identified a blown capacitor on the motherboard, which had been causing intermittent system crashes and data corruption during high-performance tasks.

## Usage notes

- Often used as a modifier in noun phrases like 'motherboard components' or 'motherboard drivers'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.