Phrase guide

carbon dioxide

noun · 2 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.

  • kär′bən dī-ŏk′sīd
  • Received-Pronunciation: /ˌkɑː.bən daɪˈɒk.saɪd/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • General-American: /ˌkɑɹ.bən daɪˈɑk.saɪd/
  • Canada: /ˌkɑɹ.bən daɪˈɒk.saɪd/
  • Australian: /ˌkɐː.bən dɑɪˈɒk.sɑɪd/
  • New-Zealand: /ˌkaː.bən daɪˈɒk.saɪd/
  • Scotland: /ˌkaɹ.bən daɪˈɔk.saɪd/
  • US: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

The normal oxide of carbon, CO2; a colorless, odorless gas formed during respiration and combustion and consumed by plants during photosynthesis.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: chemistry, inorganic-chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: carbonic acid gas, CO2, E290

Antonyms: none provided

Broader terms: greenhouse gas

2

noun

Meaning 2

a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: CO2, carbonic acid gas

Antonyms: none provided

Broader terms: dioxide, greenhouse gas, greenhouse emission

Narrower terms: chokedamp, blackdamp

History

Etymology

No etymology was provided for this word.

Across languages

Translations

101 source translations are retained for this English entry.

  • Arabic: ثَانِي أُكْسِيد الْكَرْبُون (ṯānī ʔuksīd al-karbūn) — CO2
  • Armenian: ածխաթթու գազ (acxatʻtʻu gaz) — CO2
  • Armenian: ածխածնի երկօքսիդ (acxacni erkōkʻsid) — CO2
  • Basque: karbono dioxido — CO2
  • Basque: anhidrido karboniko — CO2
  • Bulgarian: въглеро́ден диокси́д (vǎgleróden dioksíd) — CO2
  • Bulgarian: въглеро́ден двуо́кис (vǎgleróden dvuókis) — CO2
  • Catalan: diòxid de carboni — CO2
  • Catalan: biòxid de carboni — CO2
  • Catalan: anhídrid carbònic — CO2
  • Chinese Cantonese: 二氧化碳 (ji6 joeng5 faa3 taan3) — CO2
  • Chinese: 二酸化炭素 (jī-sng-hoà thoàn-sò͘) — CO2
  • Chinese: 二氧化碳 (zh-min-nan) — CO2
  • Chinese Mandarin: 二氧化碳 (èryǎnghuàtàn) — CO2
  • Czech: oxid uhličitý — CO2
  • Danish: kuldioxid — CO2
  • Dutch: kooldioxide — CO2
  • East Frisian Low German: köölenstofdiioksiid — CO2
  • Esperanto: karbona dioksido — CO2
  • Estonian: süsinikdioksiid — CO2
  • Estonian: süsihappegaas — CO2
  • Farefare: mi'igiid-yi bugsãaŋ-kugre — CO2
  • Faroese: koltvísúrni — CO2
  • Finnish: hiilidioksidi — CO2
  • French: anhydride carbonique — CO2
  • French: dioxyde de carbone — CO2
  • French: gaz carbonique — CO2
  • North Frisian: Köölendioksüüd — CO2
  • Galician: dióxido de carbono — CO2
  • Georgian: ნახშირორჟანგი (naxširoržangi) — CO2
  • German: Kohlenstoffdioxid — CO2
  • German: Kohlendioxyd — CO2
  • German: Kohlendioxid — CO2
  • Greek: διοξείδιο του άνθρακα (dioxeídio tou ánthraka) — CO2
  • Hebrew: פַּחְמָן דּוּ חַמְצָנִי (paḥmán du ḥamtzaní) — CO2
  • Hebrew: דּוּ תַּחְמֹצֶת הַפַּחְמָן (du taḥmótzet hapaḥmán) — CO2
  • Hindi: प्रांगार द्विजारेय (prāṅgār dvijārey) — CO2
  • Hindi: अंगाराम्लवायु (aṅgārāmlavāyu) — CO2
  • Hungarian: szén-dioxid — CO2
  • Icelandic: koltvísýringur — CO2
  • Indonesian: karbon dioksida — CO2
  • Ingrian: hiilihappo — CO2
  • Irish: dé-ocsaíd charbóin — CO2
  • Italian: anidride carbonica — CO2
  • Italian: diossido di carbonio — CO2
  • Japanese: 二酸化炭素 (nisanka-tanso) — CO2
  • Kazakh: көмір қышқыл газ (kömır qyşqyl gaz) — CO2
  • Khmer: កាបូនឌីអុកស៊ីត (kaaboun-diiʼoksiit) — CO2
  • Korean: 이산화탄소 (isanhwatanso) — CO2
  • Lao: ຄາບອນໄດອອກໄຊ (khā bǭn aik sai) — CO2
  • Latin: dioxydum carbonicum — CO2
  • Latvian: ogļskābā gāze — CO2
  • Latvian: oglekļa dioksīds — CO2
  • Lithuanian: anglies dioksidas — CO2
  • Macedonian: јаглероден диоксид (jagleroden dioksid) — CO2
  • Malay: karbon dioksida — CO2
  • Malayalam: ഇംഗാലാമ്ലം (iṅgālāmlaṁ) — CO2
  • Manx: daa-ocseed charboan — CO2
  • Māori: hauhā — CO2
  • Māori: waro hāora-rua — CO2
  • Mongolian: нүүрстөрөгчийн давхар исэл (nüürstörögčiin davxar isel) — CO2
  • Norwegian Bokmål: karbondioksid — CO2
  • Norwegian Nynorsk: karbondioksid — CO2
  • Ojibwe: mitigoo-inanaamowin — CO2
  • Pannonian Rusyn: угльов диоксид (uhlʹov dioksid) — CO2
  • Pannonian Rusyn: угльо-диоксид (uhlʹo-dioksid) — CO2
  • Persian: کربن دیاکسید (karbon di-oksid) — CO2
  • Polish: dwutlenek węgla — CO2
  • Portuguese: dióxido de carbono — CO2
  • Portuguese: gás carbônico — CO2
  • Romanian: bioxid de carbon — CO2
  • Romanian: dioxid de carbon — CO2
  • Romanian: anhidridă carbonică — CO2
  • Russian: двуо́кись углеро́да (dvuókisʹ ugleróda) — CO2
  • Russian: углеки́слый газ (uglekíslyj gaz) — CO2
  • Russian: диокси́д углеро́да (dioksíd ugleróda) — CO2
  • Sanskrit: अङ्गाराम्लवायु (aṅgārāmlavāyu) — CO2
  • Scottish Gaelic: carbon dà-ogsaid — CO2
  • Scottish Gaelic: gualan dà-ogsaid — CO2
  • Serbo-Croatian: ugljik dioksida — CO2
  • Sindhi: ڏوناڪسِيوَر ڪاربان (ḏonāksīvar kārbā̃) — CO2
  • Slovak: oxid uhličitý — CO2
  • Slovene: ogljikov dioksid — CO2
  • Spanish: bióxido de carbono — CO2
  • Spanish: anhídrido carbónico — CO2
  • Spanish: dióxido de carbono — CO2
  • Spanish: anhidrido carbónico — CO2
  • Swahili: kaboni dioksidi — CO2
  • Swedish: koldioxid — CO2
  • Tagalog: karbon daluksad — CO2
  • Tamil: கரியமில வாயு (kariyamila vāyu) — CO2
  • Tamil: கரியமில வளி (kariyamila vaḷi) — CO2
  • Telugu: బొగ్గుపులుసు వాయువు (boggupulusu vāyuvu) — CO2
  • Thai: คาร์บอนไดออกไซด์ (kāa-bɔ̂n dāi-ɔ́k-sāai) — CO2
  • Turkish: karbondioksit — CO2
  • Ukrainian: діокси́д вуглецю́ (dioksýd vuhlecjú) — CO2
  • Ukrainian: вуглеки́слий газ (vuhlekýslyj haz) — CO2
  • Vietnamese: cacbon đioxit — CO2
  • Vietnamese: cacbonic — CO2
  • Welsh: carbon deuocsid — CO2
  • Yiddish: קוילנשטאָף־צווייאָקסיד (koylnshtof-tsveyoksid) — CO2