noun · 5 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
Received-Pronunciation:/ˈbaɪ.ɒs/
Southern-England:Recorded audio is listed in the source snapshot.
General-American:/ˈbaɪ.oʊs/
CMU ARPABET:B AY1 OW0 S
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
Acronym of Basic Input/Output System.
Definition source: English Wiktionary via Wiktextract