Standard Lemma guide

open-source

adj · verb · 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.

  • UK: /ˈəʊpən ˌsɔːs/
  • US: /ˈoʊpən ˌsɔɹs/
  • General-American: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: OW1 P AH0 N S AO2 R S Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Of or relating to software where the source code is freely available and licensed in a manner that permits modification and redistribution.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences, software

Examples

  • Linux is an open-source operating system.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Describing any product whose composition or method of manufacturing is public knowledge and not proprietary.

Definition source: English Wiktionary via Wiktextract

Usage: broadly, not-comparable

Examples

  • open-source cola
  • open-source hardware

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adj

Meaning 3

Relying on publicly available information (open sources).

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: espionage, government, military, politics, war

Examples

  • open-source intelligence

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

verb

Meaning 4

To release the source code of, so as to permit modification and redistribution.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

adjective

Meaning 5

of or relating to or being computer software for which the source code is freely available

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

See open source.

Across languages

Translations

8 source translations are retained for this English entry.

  • Arabic: مَفْتُوح الْمَصْدَرِ (maftūḥ al-maṣdari) — Translations
  • Chinese Mandarin: 開源的 /开源的 — Translations
  • German: quelloffen — Translations
  • German: quelltextoffen — Translations
  • Greek: ανοιχτός κώδικας (anoichtós kódikas) — Translations
  • Polish: otwarty — Translations
  • Polish: otwartoźródłowy — Translations
  • Turkish: açık kaynak — Translations
Real reading context

open-source in complete knowledge articles