Unix.
An operating system that shares the original source code by Dennis Ritchie and Ken Thompson.
Meaning & usage
An operating system that shares the original source code by Dennis Ritchie and Ken Thompson.
An operating system largely compatible with Unix that qualifies for use of the UNIX trademark, currently owned by The Open Group.
Where this word comes from
Etymology tree Proto-Indo-European *mel-der. Proto-Indo-European *ml̥tós? Proto-Italic *moltos Latin multi- Proto-Indo-European *pel-der.? Latin -plex Latin multiplexlbor. English multiplexed Proto-Indo-European *h₁én Proto-Italic *en Proto-Italic *en- Latin in- Ancient Greek μορφή (morphḗ)der.? Latin fōrma Latin fōrmō Latin īnfōrmō Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Late Latin īnfōrmātiōder. Middle English enformacioun English information Proto-Indo-European *ḱe? Proto-Indo-European *ḱóm Proto-Italic *kom Proto-Italic *kom- Latin con- Latin putus Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Indo-European *-h₂tiinflu. Proto-Italic *-ājō Proto-Italic *-āō Latin -ō Latin putō Latin computō Latin computārelbor. French computerbor. English computing Proto-Indo-European *ser-der.? Proto-Italic *serwos Latin servus Proto-Indo-European *-(i)yós Proto-Italic *-ijos Proto-Italic *-ios Old Latin -ios Latin -ius Latin -ia Latin -itia Latin servitiumbor. Old French servisebor. Old English serfis Middle English servise English service English Multiplexed Information and Computing Service English Multics ▲ English eunuchinflu. English Unix A pun on Multics to sound like eunuchs, as Unix was considered to be an emasculated Multics (see multi- and uni-). Likely coined by Canadian computer scientist Brian Kernighan in 1970.
Any of the above plus Unix-like operating systems similar to Unix but not qualifying for use of the UNIX trademark.
GNU is not Unix.
The Linux kernel operating system is one of the most popular Unixes.
Where this word comes from
Etymology tree Proto-Indo-European *mel-der. Proto-Indo-European *ml̥tós? Proto-Italic *moltos Latin multi- Proto-Indo-European *pel-der.? Latin -plex Latin multiplexlbor. English multiplexed Proto-Indo-European *h₁én Proto-Italic *en Proto-Italic *en- Latin in- Ancient Greek μορφή (morphḗ)der.? Latin fōrma Latin fōrmō Latin īnfōrmō Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Late Latin īnfōrmātiōder. Middle English enformacioun English information Proto-Indo-European *ḱe? Proto-Indo-European *ḱóm Proto-Italic *kom Proto-Italic *kom- Latin con- Latin putus Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Indo-European *-h₂tiinflu. Proto-Italic *-ājō Proto-Italic *-āō Latin -ō Latin putō Latin computō Latin computārelbor. French computerbor. English computing Proto-Indo-European *ser-der.? Proto-Italic *serwos Latin servus Proto-Indo-European *-(i)yós Proto-Italic *-ijos Proto-Italic *-ios Old Latin -ios Latin -ius Latin -ia Latin -itia Latin servitiumbor. Old French servisebor. Old English serfis Middle English servise English service English Multiplexed Information and Computing Service English Multics ▲ English eunuchinflu. English Unix A pun on Multics to sound like eunuchs, as Unix was considered to be an emasculated Multics (see multi- and uni-). Likely coined by Canadian computer scientist Brian Kernighan in 1970.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.