radon
/ˈɹeɪdɒn/
radon noun: the chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.
Noun
radon (uncountable)
- The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.
- An atom of this element.
- Radon-222 (22286Rn), the most stable isotope of said element.
- Synonyms:
- exradio, radeon, radium emanation
Proper noun capitalized: Radon
Radon
- A surname from German.
- Johann Radon (1887-1956), an Austrian mathematician with results in measure theory, functional analysis and geometry.
radon meaning in Hindi, Tamil, Kannada and Gujarati
radon in Hindi
- chemical element
- तैजसाति taijsāti
radon in Tamil
- chemical element
- ரேடோன் rēṭōṉ, ஆரகன் ārakaṉ
radon in Kannada
- ರೇಡಾನ್
radon in Gujarati
- radon
- તૈજસાતિ taijsāti
More languagesFewer languages
- radon in Arabic
- رَادُون rādūn
- radon in Malay
- radon
- radon in Persian
- رادون râdon
- radon in Thai
- เรดอน ree-dɔ̂n
- radon in Vietnamese
- rađơn
Synonyms of radon
Origin of radon
Contraction of radium emanation, since the element appears in the radioactive decay of radium. By surface analysis, radio- + -on (“suffix for noble gases”).
Words formed from radon
- Radon measure
- Radon point
- Radon transform
- eka-radon
- nonradon
- radonate
- radon difluoride
- radon fluoride
- radoniferous
- radonproof
- radon seed
Phrases with radon
Questions about radon
- What does radon mean?
- Radon means the chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.
- What is radon in Hindi?
- Radon in Hindi is तैजसाति (taijsāti). See Radon meaning in Hindi.
- What part of speech is radon?
- Radon can be a noun or a proper noun.
- How do you pronounce radon?
- Radon is pronounced /ˈɹeɪdɒn/.
Words near radon in the dictionary
Source and license
Adapted from Wiktionary: radon (page history and authors); Radon (page history and authors); radon (Kannada Wiktionary) (page history and authors); તૈજસાતિ (Gujarati) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Tesco250-radon.wav, LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-radon.wav.
Cite this entry: “radon.” Word.ws, https://word.ws/radon. Based on Wiktionary, CC BY-SA 4.0.