View source for carbon dioxide

==English==

===Alternative forms===
* {{alter|en|carbon dioxid|carbondioxid}}

===Pronunciation===
* {{IPA|en|/ˌkɑːbən dʌɪˈɒksʌɪd/|a=UK}}
* {{IPA|en|/ˈˌkɑrbən daɪˈɑksaɪd/|a=US}}
* {{audio|en|LL-Q1860 (eng)-Vininn126-carbon dioxide.wav|a=US}}

===Noun===
{{en-noun|-}}

# {{senseid|en|Q1997}}{{lb|en|inorganic compound}} The normal [[oxide]] of [[carbon]], [[CO₂]]; a [[colorless]], [[odorless]] [[gas]] formed during [[respiration]] and [[combustion]] and [[consumed]] by [[plant]]s during [[photosynthesis]].
#: {{syn|en|carbonic acid gas|CO₂|E290|q3=acidity regulator}}
#: {{hyper|en|greenhouse gas}}
#: {{cot|en|carbon monoxide}}
#* {{quote-journal|en|author=[[w:Jeff Jacoby (columnist)|Jeff Jacoby]]|title=Skepticism on climate change|work=The International Herald Tribune|date=2008-12-09|url=https://www.nytimes.com/2008/12/09/opinion/09iht-edjacoby.1.18523665.html|issn=0362-4331|passage=There were dozens of presentations in 2008, including: {{...|"Strengths and Weaknesses of Climate Models," "Ecological and Demographic Perspectives on the Status of Polar Bears," and}} "The Overstated Role of '''Carbon Dioxide''' on Climate Change."}}
#* {{quote-journal|en|year=2013|month=September–October|author=Katie L. Burke|magazine=w:American Scientist|title=In the News|url=http://www.americanscientist.org/issues/pub/2013/5/in-the-news-47|archiveurl=https://web.archive.org/web/20130903041000/http://www.americanscientist.org/issues/pub/2013/5/in-the-news-47|archivedate=2013-09-03|passage=Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis: the ability to convert water and '''carbon dioxide''' into carbohydrates and waste oxygen using solar energy.}}

====Usage notes====
* The ''O'' in "CO{{sub|2}}" should always be capitalized, otherwise the formula would be interpreted as a [[diatomic]] molecule of [[cobalt]].

====Derived terms====
* {{l|en|carbon dioxide-equivalent}}
* {{l|en|carbon dioxide snow}}

====Translations====
{{trans-top|CO₂}}
* Albanian: {{t-needed|sq}}
* Arabic: {{t|ar|ثَانِي أُكْسِيد الْكَرْبُون|m}}
* Armenian: {{t+|hy|ածխաթթու գազ}}, {{t+|hy|ածխածնի երկօքսիդ|sc=Armn}}
* Basque: {{t|eu|karbono dioxido}}, {{t|eu|anhidrido karboniko}}
* Bengali: {{t-needed|bn}}
* Bulgarian: {{t|bg|въглероден диоксид|m}}
* Catalan: {{t|ca|diòxid de carboni|m}}, {{t|ca|biòxid de carboni}}, {{t|ca|anhídrid carbònic}}
* Chinese:
*: Cantonese: {{t|yue|二氧化碳|tr=ji6 joeng5 faa3 taan3}}
*: Hokkien: {{t|nan-hbl|二酸化炭素|tr=jī-sng-hoà thoàⁿ-sò͘}}, {{t+|nan-hbl|二氧化碳|tr=jī-iông-hòa-thòaⁿ}}
*: Mandarin: {{t+|cmn|二氧化碳|tr=èryǎnghuàtàn}}
* Czech: {{t+|cs|oxid uhličitý|m}}
* Danish: {{t|da|kuldioxid}}
* Dutch: {{t+|nl|kooldioxide}}
* Esperanto: {{t|eo|karbona dioksido}}
* Estonian: {{t|et|süsinikdioksiid}}, {{t|et|süsihappegaas}}
* Farefare: {{t|gur|mi'igiid-yi bugsãaŋ-kugre}}
* Faroese: {{t|fo|koltvísúrni|n}}
* Finnish: {{t+|fi|hiilidioksidi}}
* French: {{t+|fr|anhydride carbonique|m}}, {{t+|fr|dioxyde de carbone|m}}, {{t+|fr|gaz carbonique|m}} {{qualifier|as a gas}}
* Galician: {{t+|gl|dióxido de carbono|m}}
* Georgian: {{t|ka|ნახშირორჟანგი|sc=Geor}}
* German: {{t+|de|Kohlenstoffdioxid|n}}, {{t+|de|Kohlendioxyd|n}} {{qualifier|colloquial}} <!--dict.leo.org says that [[Kohlendioxyd]] is obsolete but it remains colloquially the dominant variant-->, {{t+|de|Kohlendioxid|n}}
* Greek: {{t+|el|διοξείδιο του άνθρακα}}
* Hebrew: {{t+|he|פַּחְמָן דּוּ חַמְצָנִי|m|tr=paḥmán du ḥamtzaní}}, {{t+|he|דּוּ תַּחְמֹצֶת הַפַּחְמָן|m|tr=du taḥmótzet hapaḥmán}}
* Hindi: {{t|hi|प्रांगार द्विजारेय}}, {{t|hi|अंगाराम्लवायु}}
* Hungarian: {{t+|hu|szén-dioxid}}
* Icelandic: {{t+|is|koltvísýringur|m}}
* Indonesian: {{t+|id|karbon dioksida}}
* Ingrian: {{t|izh|hiilihappo}}
* Irish: {{t|ga|dé-ocsaíd charbóin|f}}
* Italian: {{t+|it|anidride carbonica|f}}, {{t|it|diossido di carbonio|m}}
* Japanese: {{t+|ja|二酸化炭素|tr=にさんかたんそ, nisanka-tanso}}
* Kazakh: {{t|kk|көмір қышқыл газ}}
* Khmer: {{t|km|កាបូនឌីអុកស៊ីត}}
* Korean: {{t+|ko|이산화탄소(二酸化炭素)}}
* Lao: {{t|lo|ຄາບອນໄດອອກໄຊ}}
* Latin: {{t|la|dioxydum carbonicum}}
* Latvian: {{t|lv|ogļskābā gāze}}, {{t|lv|oglekļa dioksīds}}
* Macedonian: {{t|mk|јаглероден диоксид}}
* Malay: {{t+|ms|karbon dioksida}}
* Malayalam: {{t+|ml|ഇംഗാലാമ്ലം}}
* Manx: {{t|gv|daa-ocseed charboan|m}}
* Maori: {{t|mi|hauhā}}, {{t|mi|waro hāora-rua}}
* Norwegian:
*: Bokmål: {{t|nb|karbondioksid|n}}
*: Nynorsk: {{t|nn|karbondioksid|n}}
* Pannonian Rusyn: {{t|rsk|угльов диоксид|m-in}}, {{t|rsk|угльо-диоксид|m-in}}
* Persian: {{t|fa|کربن دی‌اکسید|tr=karbon di-oksid}}
* Polish: {{t+|pl|dwutlenek węgla|m}}
* Portuguese: {{t|pt|dióxido de carbono}}, {{t|pt|gás carbônico|m}}
* Romanian: {{t|ro|bioxid de carbon|m}}, {{t|ro|dioxid de carbon|m}}, {{t+|ro|anhidridă carbonică|f}}
* Russian: {{t+|ru|двуо́кись углеро́да|f}}, {{t+|ru|углеки́слый газ|m}}, {{t+|ru|диокси́д углеро́да|m}}
* Sanskrit: {{t|sa|अङ्गाराम्लवायु}}
* Scottish Gaelic: {{t|gd|carbon dà-ogsaid|m}}, {{t|gd|gualan dà-ogsaid|m}}
* Serbo-Croatian: {{t|sh|ugljik dioksida}}
* Sindhi: {{t+|sd|ڏوناڪسِيوَر ڪاربان|f|sc=sd-Arab}}
* Slovak: {{t|sk|oxid uhličitý|m}}
* Slovene: {{t|sl|ogljikov dioksid|m}}
* Spanish: {{t|es|bióxido de carbono}}, {{t|es|anhídrido carbónico}}, {{t|es|dióxido de carbono}}
* Swahili: {{t|sw|kaboni dioksidi}}
* Swedish: {{t+|sv|koldioxid}}
* Tagalog: {{t|tl|karbon daluksad}}
* Tamil: {{t|ta|கரியமில வாயு}}, {{t|ta|கரியமில வளி}}
* Telugu: {{t|te|బొగ్గుపులుసు వాయువు}}
* Thai: {{t+|th|คาร์บอนไดออกไซด์}}
* Turkish: {{t+|tr|karbondioksit}}
* Ukrainian: {{t|uk|діокси́д вуглецю́|m}}, {{t|uk|[[вуглеки́слий]] [[газ]]|m}}
* Vietnamese: {{t+|vi|cacbon đioxit}}, {{t|vi|cacbonic}}
* Welsh: {{t+|cy|carbon deuocsid|m}}
* Yiddish: {{t|yi|קוילנשטאָף־צווייאָקסיד}}
{{trans-bottom}}

====See also====
* {{l|en|carbon offset}}
* {{l|en|carbonate}}
* {{l|en|dry ice}}

===Further reading===
* {{pedia}}

{{C|en|Climate change|Carbon|Gases}}