Standard Lemma guide

oxygen

noun · 6 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.

  • ŏk'sĭjən
  • Received-Pronunciation: /ˈɒksɪd͡ʒən/
  • Australian, British, Scotland, Southern, Standard: /ˈɔksɪd͡ʒən/
  • General-American: /ˈɑksɪd͡ʒən/
  • General-American: /ˈɑksəd͡ʒən/
  • US: Recorded audio is listed in the source snapshot.
  • Canada: /ˈɒksɪd͡ʒən/
  • New-Zealand: /ˈɒksəd͡ʒən/
  • New-Zealand: [ˈɔ̟ksəd͡ʒən]
  • CMU ARPABET: AA1 K S AH0 JH AH0 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
  • CMU ARPABET 2: AA1 K S IH0 JH AH0 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

The chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994. It is a colorless and odorless gas. Sometimes called elemental oxygen to distinguish it from molecular oxygen.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Examples

  • Holonyms: dioxygen, O2, oxygen (loose sense)
  • By molar fraction, calcium oxide contains equal parts calcium and oxygen.

Meaning relationships

Synonyms: sourstuff, E948[packaging gas]]>

Antonyms: none provided

Broader terms: chalcogen, element

2

noun

Meaning 2

Molecular oxygen (O2), a colorless, odorless gas at room temperature.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Qualifier: loose but very common; even in formal use; loose but very common; even in formal use

Examples

  • Meronym: oxygen (strict sense)
  • About 21% of the air you breathe is oxygen.

Meaning relationships

Synonyms: dioxygen, mul:O2

Antonyms: none provided

3

noun

Meaning 3

A mixture of oxygen and other gases, administered to a patient to help them breathe.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

An atom of this element.

Definition source: English Wiktionary via Wiktextract

Usage: countable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

A condition or environment in which something can thrive.

Definition source: English Wiktionary via Wiktextract

Usage: countable, figuratively, uncountable

Examples

  • Silence is the oxygen of shame.
  • They hoped to starve the terrorists of the oxygen of publicity.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: O, atomic number 8

Antonyms: none provided

Broader terms: chemical element, element, gas

Narrower terms: liquid oxygen, LOX

History

Etymology

Etymology tree Proto-Indo-European *h2eḱ-der.? Ancient Greek ὀξύς (oxús) Proto-Indo-European *ǵenh1- Proto-Indo-European *-os Proto-Indo-European *ǵénh1os Proto-Hellenic *génos Ancient Greek γένος (génos) French oxygènebor. English oxygen Borrowed from French oxygène (originally in the form principe oxygène, a variant of principe oxigine ‘acidifying principle’, suggested by Lavoisier), from Ancient Greek ὀξύς (oxús, “sharp”) + γένος (génos, “birth”), referring to oxygen's supposed role in the formation of acids. By surface analysis, oxy- + -gen.

Across languages

Translations

243 source translations are retained for this English entry.

  • Abkhaz: аҵәыҵәри (acwʼəcwʼri) — chemical element
  • Afrikaans: suurstof — chemical element
  • Albanian: oksigjen — chemical element
  • Amharic: ኦክሲጅን (ʾoksiǧn) — chemical element
  • Arabic: أُكْسِجِين (ʔuksijīn) — chemical element
  • Arabic: أكسجين (ʔuksijīn, ʔuksujīn) — chemical element
  • Aragonese: ocsichén — chemical element
  • Armenian: թթվածին (tʻtʻvacin) — chemical element
  • Assamese: অম্লজান (omlozan) — chemical element
  • Asturian: oxíxenu — chemical element
  • Azerbaijani: مولدالحموضه (muvallidulhumuze) — chemical element
  • Azerbaijani: oksigen — chemical element
  • Azerbaijani: müvəllidülhümuzə — chemical element
  • Basque: oxigenoa — chemical element
  • Belarusian: кісларо́д (kislaród) — chemical element
  • Belarusian: тлен (tlen) — chemical element
  • Bengali: অম্লজান (omlojan) — chemical element
  • Bengali: অক্সিজেন (okśijen) — chemical element
  • Breton: oksigen — chemical element
  • Bulgarian: кислоро́д (kisloród) — chemical element
  • Burmese: အောက်ဆီဂျင် (aukhcigyang) — chemical element
  • Buryat: хүшэлтүрэгшэ (xüšeltüregše) — chemical element
  • Catalan: oxigen — chemical element
  • Chinese Cantonese: 氧 (joeng5) — chemical element
  • Hakka Chinese: 氧 (yông, yòng) — chemical element
  • Chinese: 酸素 (sng-sò͘, sàng-sò͘) — chemical element
  • Chinese: 氧 (ióng) — chemical element
  • Chinese Mandarin: 氧 (yǎng) — chemical element
  • Chuvash: йӳҫлӗк (jüślĕk) — chemical element
  • Cornish: oksyjen — chemical element
  • Corsican: ossigenu — chemical element
  • Czech: kyslík — chemical element
  • Danish: ilt — chemical element
  • Danish: oxygen — chemical element
  • Dutch: zuurstof — chemical element
  • Dzongkha: སྲོག་རླུང (srog rlung) — chemical element
  • Erzya: чапамо чачтый (čapamo čačtïj) — chemical element
  • Esperanto: oksigeno — chemical element
  • Estonian: hapnik — chemical element
  • Ewe: àgbèyà — chemical element
  • Farefare: mi'ige-walʋm — chemical element
  • Faroese: súrevni — chemical element
  • Faroese: ilt — chemical element
  • Finnish: happi — chemical element
  • French: oxygène — chemical element
  • North Frisian: sörstuf — chemical element
  • West-Frisian: soerstof — chemical element
  • Friulian: ossigjen — chemical element
  • Galician: osíxeno — chemical element
  • Georgian: ჟანგბადი (žangbadi) — chemical element
  • German: Sauerstoff — chemical element
  • German: Oxygen — chemical element
  • German: Oxygenium — chemical element
  • German: Sauerstoff — chemical element
  • Bavarian German: Sauastoff — chemical element
  • Central Franconian: Sauerstoff — chemical element
  • Greek: οξυγόνο (oxygóno) — chemical element
  • Greenlandic: ilti — chemical element
  • Gujarati: પ્રાણવાયુ (prāṇvāyu) — chemical element
  • Haitian Creole: oksijèn — chemical element
  • Hawaiian: ʻokikene — chemical element
  • Hebrew: חַמְצָן (khamtsan) — chemical element
  • Hindi: जारक (jārak) — chemical element
  • Hindi: ऑक्सीजन (ŏksījan) — chemical element
  • Hindi: प्राणवायु (prāṇvāyu) — chemical element
  • Hindi: आक्सीजन (āksījan) — chemical element
  • Hungarian: oxigén — chemical element
  • Hungarian: éleny — chemical element
  • Hungarian: savító — chemical element
  • Icelandic: súrefni — chemical element
  • Ido: oxo — chemical element
  • Ido: oxigeno — chemical element
  • Indonesian: oksigen — chemical element
  • Indonesian: zat asam — chemical element
  • Indonesian: zat pembakar — chemical element
  • Ingrian: kisloroda — chemical element
  • Interlingua: oxygeno — chemical element
  • Irish: ocsaigin — chemical element
  • Irish: aer-beatha — chemical element
  • Italian: ossigeno — chemical element
  • Japanese: 酸素 (sanso) — chemical element
  • Javanese: oksigen — chemical element
  • Javanese: zat asam — chemical element
  • Kalmyk: күчлтөр (küçltör) — chemical element
  • Kannada: ಆಮ್ಲಜನಕ (āmlajanaka) — chemical element
  • Kapampangan: oxygen — chemical element
  • Kashubian: krziseń — chemical element
  • Kazakh: оттек (ottek) — chemical element
  • Kazakh: оттегі (ottegı) — chemical element
  • Khmer: អុកស៊ីហ្សែន (oksiizaen) — chemical element
  • Komi-Permyak: шöмувтыр (šömuvtyr) — chemical element
  • Komi-Zyrian: шомвачужысь (šomvaćužyś) — chemical element
  • Korean: 산소 (sanso) — chemical element
  • Northern Kurdish: oksîjen — chemical element
  • Kyrgyz: кычкылтек (kıckıltek) — chemical element
  • Lao: ອົກຊີແຊນ (ʼok sī sǣn) — chemical element
  • Latgalian: skuobeklis — chemical element
  • Latin: oxygenium — chemical element
  • Latvian: skābeklis — chemical element
  • Ligurian: oscigeno — chemical element
  • Limburgish: zuurstof — chemical element
  • Lingala: oksijɛ́ní — chemical element
  • Lithuanian: deguonis — chemical element
  • Low German: Suerstoff — chemical element
  • Luxembourgish: Sauerstoff — chemical element
  • Macedonian: кислород (kislorod) — chemical element
  • Malay: oksigen — chemical element
  • Malay: zat pembakar — chemical element
  • Malayalam: അമ്ലജനകം (amlajanakaṁ) — chemical element
  • Malayalam: ഓക്സിജൻ (ōksijaṉ) — chemical element
  • Malayalam: ജീവവായു (jīvavāyu) — chemical element
  • Malayalam: പ്രാണവായു (prāṇavāyu) — chemical element
  • Maltese: ossiġenu — chemical element
  • Manx: ocsygien — chemical element
  • Māori: hāora — chemical element
  • Marathi: प्राणवायू (prāṇvāyū) — chemical element
  • Eastern Mari: шопештыш (šopeštyš) — chemical element
  • Marshallese: akjijen — chemical element
  • Central Melanau: oksijen — chemical element
  • Moksha: шапам (šapam) — chemical element
  • Mongolian: хүчилтөрөгч (xüčiltörögč) — chemical element
  • Navajo: níłchʼi yáʼátʼéehii — chemical element
  • Newar: अक्सिजन (aksijana) — chemical element
  • Norwegian Bokmål: oksygen — chemical element
  • Norwegian Bokmål: surstoff — chemical element
  • Norwegian Nynorsk: nøre — chemical element
  • Norwegian Nynorsk: oksygen — chemical element
  • Norwegian Nynorsk: surstoff — chemical element
  • Occitan: oxigèn — chemical element
  • Odia: ଅମ୍ଳଜାନ (amḷajāna) — chemical element
  • Oromo: oxygen — chemical element
  • Ossetian: туаггуыр — chemical element
  • Papiamentu: zürstòf — chemical element
  • Papiamentu: oxigeno — chemical element
  • Pashto: اکسيجن (oksiǰán) — chemical element
  • Persian: اکسیژن (oksižen) — chemical element
  • Polish: tlen — chemical element
  • Brazilian Portuguese: oxigênio — chemical element
  • European Portuguese: oxigénio — chemical element
  • Punjabi: ਆਕਸੀਜਨ (ākasījan) — chemical element
  • Quechua: muksichaq — chemical element
  • Romagnol: usìgen — chemical element
  • Romanian: oxigen — chemical element
  • Russian: кислоро́д (kisloród) — chemical element
  • Samogitian: degounis — chemical element
  • Sanskrit: अम्लकर (amlakara) — chemical element
  • Santali: ᱚᱠᱥᱤᱡᱮᱱ (ôksijen) — chemical element
  • Scottish Gaelic: ogsaidean — chemical element
  • Serbo-Croatian: кисео̀нӣк — chemical element
  • Serbo-Croatian: кѝсӣк — chemical element
  • Serbo-Croatian: kiseònīk — chemical element
  • Serbo-Croatian: kìsīk — chemical element
  • Shan: ဢွၵ်ႉသီႇၵျိၼ်ႇ (ʼâ̰uk sìi kjìn) — chemical element
  • Sicilian: ossìgginu — chemical element
  • Sinhalese: අම්ලකර (amlakara) — chemical element
  • Slovak: kyslík — chemical element
  • Slovene: kisik — chemical element
  • Upper Sorbian: kislik — chemical element
  • Spanish: oxígeno — chemical element
  • Sranan Tongo: swaskotriki — chemical element
  • Sundanese: oksigén — chemical element
  • Swahili: oksijeni — chemical element
  • Swazi: umoyakuphila — chemical element
  • Swedish: syre — chemical element
  • Swedish: oxygen — chemical element
  • Tagalog: oksiheno — chemical element
  • Tajik: оксиген (oksigen) — chemical element
  • Tamil: உயிர்வளி (uyirvaḷi) — chemical element
  • Tamil: உயிரியம் (uyiriyam) — chemical element
  • Tamil: ஆக்சிசன் (ākcicaṉ) — chemical element
  • Tamil: ஆக்சிஜன் (ākcijaṉ) — chemical element
  • Telugu: ఆమ్లజని (āmlajani) — chemical element
  • Telugu: ఆక్సిజను (āksijanu) — chemical element
  • Thai: ออกซิเจน (ɔ́k-sí-jeen) — chemical element
  • Tibetan: སྲོག་འཛིན་རླུང Literally (srog 'dzin rlung) — chemical element
  • Tibetan: “life-supporting air” — chemical element
  • Tibetan: སྲོག་རླུང (srog rlung) — chemical element
  • Tibetan: འཚོ་རླུང Literally ('tsho rlung) — chemical element
  • Tibetan: “life-air” — chemical element
  • Tibetan: འཚོ་དབུགས Literally ('tsho dbugs) — chemical element
  • Tibetan: “life-breath” — chemical element
  • Tsonga: moya-tenga — chemical element
  • Turkish: oksijen — chemical element
  • Turkish: müvellidülhumuza — chemical element
  • Turkmen: kislorod — chemical element
  • Ukrainian: ки́сень (kýsenʹ) — chemical element
  • Ukrainian: оксиге́н (oksyhén) — chemical element
  • Urdu: آکسیجن (āksījan) — chemical element
  • Urdu: نَسِیم (nasīm) — chemical element
  • Uyghur: ئوكسىگېن (oksigën) — chemical element
  • Uzbek: kislorod — chemical element
  • Uzbek: кислород (kislorod) — chemical element
  • Venda: gesedungi — chemical element
  • Veps: hapanik — chemical element
  • Vietnamese: ôxy — chemical element
  • Vietnamese: dưỡng khí — chemical element
  • Volapük: loxin — chemical element
  • Welsh: ocsigen — chemical element
  • Welsh: ufelai — chemical element
  • Xhosa: umongomoya — chemical element
  • Yiddish: זויערשטאָף (zoyershtof) — chemical element
  • Yoruba: ọ́síjìn — chemical element
  • Zulu: umoyampilo — chemical element
  • Belarusian: тлен (tlen) — molecular oxygen
  • Bulgarian: кислоро́д (kisloród) — molecular oxygen
  • Chinese Cantonese: 氧氣 /氧气 (joeng5 hei3) — molecular oxygen
  • Chinese: 氧氣 /氧气 (ióng-khì) — molecular oxygen
  • Chinese: 酸素 (sng-sò͘, sàng-sò͘) — molecular oxygen
  • Chinese Mandarin: 氧氣 /氧气 (yǎngqì) — molecular oxygen
  • Danish: oxygen — molecular oxygen
  • Danish: ilt — molecular oxygen
  • Dutch: zuurstof — molecular oxygen
  • Finnish: happi — molecular oxygen
  • German: Sauerstoff — molecular oxygen
  • Greek: οξυγόνο (oxygóno) — molecular oxygen
  • Ingrian: kisloroda — molecular oxygen
  • Japanese: 酸素 (sanso) — molecular oxygen
  • Korean: 산소 (sanso) — molecular oxygen
  • Latin: oxygenium — molecular oxygen
  • Persian: اکسیژن (oksižen) — molecular oxygen
  • Polish: tlen — molecular oxygen
  • Slovak: kyslík — molecular oxygen
  • Swedish: syrgas — molecular oxygen
  • Telugu: ప్రాణవాయువు (prāṇavāyuvu) — molecular oxygen
  • Telugu: ఆక్సిజను (āksijanu) — molecular oxygen
  • Ukrainian: ки́сень (kýsenʹ) — molecular oxygen
  • Belarusian: тлен (tlen) — atom of oxygen
  • Bulgarian: кислоро́д (kisloród) — atom of oxygen
  • Danish: oxygenatom — atom of oxygen
  • Dutch: zuurstofatoom — atom of oxygen
  • Finnish: happiatomi — atom of oxygen
  • German: Sauerstoffatom — atom of oxygen
  • Greek: οξυγόνο (oxygóno) — atom of oxygen
  • Japanese: 酸素 (sanso) — atom of oxygen
  • Korean: 산소원자 (sansowonja) — atom of oxygen
  • Marshallese: akjijen — atom of oxygen
  • Odia: ଅମ୍ଳଜାନ (amḷajāna) — atom of oxygen
  • Persian: اکسیژن (oksižen) — atom of oxygen
  • Polish: tlen — atom of oxygen
  • Brazilian Portuguese: oxigênio — atom of oxygen
  • European Portuguese: oxigénio — atom of oxygen
  • Swedish: syreatom — atom of oxygen
  • Ukrainian: оксиге́н (oksyhén) — atom of oxygen
Real reading context

oxygen in complete knowledge articles