CO₂
German, noun/ˌt͡seːoˈt͡svaɪ̯/
CO₂ is spelled C-O (2 letters) and appears 85 times per million words in written German, the 1,019th most frequent German word form (wordfreq, 2021 data). CO₂ is a German neuter noun meaning “carbon dioxide” (English Wiktionary, September 2026). The German Wiktionary defines it as “chemische Summenformel von Kohlendioxid”.
What does CO₂ mean in English?
noun
- 1
neutercarbon dioxide
prefix
- 1
alternative form of ko-
Source: English Wiktionary, German section, dump of September 2, 2026 (CC BY-SA 4.0).
How German dictionaries define it
abbreviation: 1. Compagnie, Company, Kompanie 2. Kompagnon
abbreviation: 1. Landkreis und Stadt Coburg 2. Formel von Kohlenstoffmonoxid
noun: 1. chemische Summenformel von Kohlendioxid
The definition in the German Wiktionary, in German.
Source: German Wiktionary, dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.
Forms of CO₂
- CO2 alternative
- CO₂s genitive singular
Source: English Wiktionary and German Wiktionary (dumps of September 2, 2026 and September 1, 2026).
How do you pronounce CO₂?
- /ˌt͡seːoˈt͡svaɪ̯/
- [ˌt͡seːoˈt͡svaɪ̯]
Sources: English Wiktionary, German Wiktionary (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.
How common is CO₂ in German?
CO₂ appears 85 times per million words in written German.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).