# firmware

/ˈfɝmˌwɛɹ/ (US) · /fˈɜːmweə/ (UK)

Source: https://englishreference.com/word/firmware
Updated: 2026-08-27

## Senses

### 1. hardware control software

noun · CEFR C1 · Technical

software that is permanently stored on a hardware device to tell it how to function.

For teachers: a category of software programmed into a hardware device's non-volatile memory, providing the necessary instructions for how the device communicates with other computer hardware.

- You might need to update the firmware on your router to fix the connection issues.
- The manufacturer released a critical firmware update to patch a vulnerability in the solid-state drive's controller logic.

Usage: Uncountable in general use, though 'firmwares' may appear in technical contexts when referring to multiple distinct versions or types.

Teaching tip: Learners often confuse this with 'software' or 'drivers'; explain that firmware lives 'inside' the hardware and is more permanent than a standard app.

## Examples

- The router needs a firmware update to fix the connection issues.
- Manufacturers often release firmware updates to patch security vulnerabilities or improve the performance of smart home devices.
- Unlike standard software applications that reside on a hard drive, firmware is typically stored on non-volatile memory chips directly integrated into the motherboard or peripheral hardware.

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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.