plural BIOSes
: a software element of a computer operating system that allows the CPU to communicate with connected input and output devices (such as a keyboard or a monitor)
Your PC contains several BIOSes—the video BIOS that interfaces your CPU and video card, for example—but the most fundamental is the system BIOS.Neil Randall

Examples of BIOS in a Sentence

Recent Examples on the Web As long as the user can get into their BIOS/UEFI settings, this can be remedied by temporarily disabling Secure Boot (if the user has set a BIOS password this would make recovery extremely difficult). Dan Goodin, Ars Technica, 7 Feb. 2024 Rather than argue about keys, BIOS files, and other matters in court, Dolphin gave up on Steam, while keeping the project alive elsewhere. Kevin Purdy, Ars Technica, 12 Jan. 2024 That could be changing early next year, according to the release notes for a slew of BIOS updates for Gigabyte motherboards. Andrew Cunningham, Ars Technica, 13 Nov. 2023 All affected motherboards will have BIOS updates available by the end of September. Tom Warren, The Verge, 6 Sep. 2023 Control over these devices is handled through the BIOS or Asus' Armoury Crate software. Joe Shields, PCMAG, 3 Sep. 2023 Users can download other BIOS versions for their motherboard through MSI’s support website. Michael Kan, PCMAG, 25 Aug. 2023 A number of Reddit users have reported the same BSOD after installing the update, all running Intel systems on MSI motherboards with the latest BIOS updates applied. Tom Warren, The Verge, 24 Aug. 2023 To fix the problem, the company and other motherboard vendors rolled out a BIOS update, which can essentially cap the SoC voltage to 1.3 volts. Michael Kan, PCMAG, 16 May 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'BIOS.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Basic Input/Output System

First Known Use

1980, in the meaning defined above

Time Traveler
The first known use of BIOS was in 1980

Dictionary Entries Near BIOS

Cite this Entry

“BIOS.” Dictionary, Merriam-Webster, Accessed 25 Feb. 2024.

Medical Definition


bi·​os ˈbī-ˌäs How to pronounce bios (audio)
: a mixture of vitamins of the B complex essential for the optimum growth of some yeasts
Last Updated: - Updated example sentences
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