radon

See also: Radon, rádon, radón, and Radoń

English

Chemical element
Rn	Previous: astatine (At)
	Next: francium (Fr)

Etymology

Contraction of radium emanation, since the element appears in the radioactive decay of radium.

Pronunciation

• enPR: rā'dŏn, IPA^(key): /ˈɹeɪdɒn/

Noun

radon (uncountable)

1. A radioactive chemical element (symbol Rn, formerly Ro) with atomic number 86, one of the noble gases.
2. The most stable isotope of this element, ²²²₈₆Rn.

Synonyms

• emanation (obsolete) (definition 1)
• exradio (archaic) (definition 2)
• niton (obsolete) (definition 1)

Derived terms

• eka-radon
• radon difluoride
• radon fluoride

Related terms

• radium

Translations

chemical element

• Afrikaans: radon (af)
• Arabic: رَادُون‎ m (rādun)
• Armenian: ռադոն (hy) (ṙadon)
• Asturian: radón m
• Basque: radona
• Belarusian: радо́н m (radón)
• Bulgarian: радо́н m (radón)
• Catalan: radó (ca) m
• Chinese:

  Mandarin: 氡 (zh) (dōng)

• Czech: radon (cs) m
• Danish: radon (da) n
• Dhivehi: please add this translation if you can
• Dutch: radon (nl) n
• Esperanto: radono (eo)
• Estonian: radoon (et)
• Faroese: radon n
• Finnish: radon (fi)
• French: radon (fr) m
• Friulian: radon m
• Galician: radon (gl) m
• Georgian: რადონი (radoni)
• German: Radon (de) n
• Greek: ραδόνιο (el) n (radónio)
• Hebrew: רדון‎ (he) m (radón)
• Hindi: तैजसाति (taijasaati)
• Hungarian: radon (hu)
• Icelandic: radon (is) n
• Irish: radón m
• Italian: radon (it) m, rado (it) m
• Japanese: ラドン (ja) (radon)
• Kashubian: redón

• Kazakh: радон (kk) (radon)
• Korean: 라돈 (ko) (radon)
• Latvian: radons m
• Lithuanian: radonas (lt) m
• Luxembourgish: Radon
• Macedonian: радон m (radon)
• Malay: radon
• Maltese: radon m
• Manx: raadon
• Mongolian: радон (mn) (radon)
• Norwegian: radon n
• Persian: رادون‎ (fa) (râdon)
• Polish: radon (pl) m
• Portuguese: rádon (pt) m
• Romanian: radon (ro) n
• Russian: радо́н (ru) m (radón)
• Serbo-Croatian:

  Cyrillic: радон m

  Roman: radon (sh) m

• Slovak: radón (sk) m
• Slovene: radon (sl) m
• Spanish: radón (es) m
• Swedish: radon (sv) n
• Tajik: радон (radon)
• Tamil: ரேடோன் (rēṭōṉ), ஆரகன் (ta) (ārakaṉ)
• Thai: เรดอน (ree-dɔ̂n)
• Turkish: radon (tr)
• Ukrainian: радо́н m (radón)
• Uzbek: radon (uz), радон (uz)
• Vietnamese: rađơn
• Volapük: radonin (vo)
• West Frisian: radon n

The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout#Translations.

Translations to be checked

• Albanian: ^{(please verify)} radon
• Breton: ^{(please verify)} radon (br)
• Cornish: ^{(please verify)} radon

• Lithuanian: ^{(please verify)} radonas (lt)
• Welsh: ^{(please verify)} radon (cy)

See also

• actinon
• radium emanation

Anagrams

• Ardon, Daron, Doran, Drona, NORAD, Nardo, Ronda, adorn, and/or, andro, andro-, norad, rando

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Afrikaans

Chemical element
Rn	Previous: astaat (At)
	Next: frankium (Fr)

Noun

radon (uncountable)

1. radon

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Crimean Tatar

Noun

radon

1. radon.

Declension

Declension of radon

nominative	radon
genitive	radonnıñ
dative	radonğa
accusative	radonnı
locative	radonda
ablative	radondan

References

• Mirjejev, V. A.; Usejinov, S. M. (2002) Ukrajinsʹko-krymsʹkotatarsʹkyj slovnyk [Ukrainian – Crimean Tatar Dictionary]‎^[1], Simferopol: Dolya, →ISBN

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Czech

Noun

radon m

1. radon

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Danish

Noun

radon

1. radon

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Dutch

Chemical element
Rn	Previous: astaat (At)
	Next: francium (Fr)

Pronunciation

• Audio

  (file)

Noun

radon n (uncountable)

1. radon

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Esperanto

Noun

radon

1. accusative singular of rado

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Finnish

Pronunciation

• IPA^(key): /ˈrɑːdon/, [ˈrɑːdo̞n]
• Hyphenation: ra‧don

Noun

radon

1. radon

Declension

Inflection of radon (Kotus type 6/paperi, no gradation)
nominative		radon	radonit
genitive		radonin	radonien radoneiden radoneitten
partitive		radonia	radoneita radoneja
illative		radoniin	radoneihin
		singular	plural
nominative		radon	radonit
accusative	nom.	radon	radonit
	gen.	radonin
genitive		radonin	radonien radoneiden radoneitten
partitive		radonia	radoneita radoneja
inessive		radonissa	radoneissa
elative		radonista	radoneista
illative		radoniin	radoneihin
adessive		radonilla	radoneilla
ablative		radonilta	radoneilta
allative		radonille	radoneille
essive		radonina	radoneina
translative		radoniksi	radoneiksi
instructive		—	radonein
abessive		radonitta	radoneitta
comitative		—	radoneineen

See also

• raadon

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French

Pronunciation

• IPA^(key): /ʁa.dɔ̃/
• Rhymes: -dɔ̃

Noun

radon m (uncountable)

1. radon

Further reading

• “radon” in le Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Anagrams

• rando

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Galician

Noun

radon m (uncountable)

1. radon

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Italian

Chemical element
Rn	Previous: astato (At)
	Next: francio (Fr)

Pronunciation

• IPA^(key): /ˈra.don/, [ˈräːd̪on], [ˈräːd̪ɔn]

Noun

radon m (invariable)

1. (chemistry) radon

Anagrams

• andrò
• nardo
• ronda

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Japanese

Romanization

radon

1. Rōmaji transcription of ラドン

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Latin

Pronunciation

• (Classical) IPA^(key): /ˈra.don/, [ˈra.dɔn]

Noun

radon n (genitive radī); second declension

1. radon

Inflection

Second declension, Greek type.

Case	Singular	Plural
Nominative	radon	rada
Genitive	radī	radōrum
Dative	radō	radīs
Accusative	radon	rada
Ablative	radō	radīs
Vocative	radon	rada

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Malay

Chemical element
Rn	Previous: astatin (At)
	Next: fransium (Fr)

Etymology

From English radon.

Pronunciation

• IPA^(key): [radɔn], [redɔn]
• Rhymes: -dɔn, -ɔn

Noun

radon

1. radon (chemical element)

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Polish

Pronunciation

• IPA^(key): /ˈra.dɔn/

• audio

  (file)

Noun

Chemical element
Rn	Previous: astat (At)
	Next: frans (Fr)

radon m inan

1. radon (chemical element, Rn, atomic number 86)

Declension

declension of radon

	singular
nominative	radon
genitive	radonu
dative	radonowi
accusative	radon
instrumental	radonem
locative	radonie
vocative	radonie

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Serbo-Croatian

Noun

radon m (Cyrillic spelling радон)

1. radon

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Slovene

Chemical element
Rn	Previous: astát (At)
	Next: fráncij (Fr)

Pronunciation

• IPA^(key): /ˈráːdɔn/, /raˈdóːn/
• Tonal orthography: rȃdon, radọ̑n

Noun

rádon or radón m inan (genitive rádona or radóna, uncountable)

1. radon

Declension

Declension of rádon (masculine inan., hard o-stem)

	singular
nominative	rádon
accusative	rádon
genitive	rádona
dative	rádonu
locative	rádonu
instrumental	rádonom

Declension of radón (masculine inan., hard o-stem)

	singular
nominative	radón
accusative	radón
genitive	radóna
dative	radónu
locative	radónu
instrumental	radónom

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Swedish

Pronunciation

• IPA^(key): /raˈdoːn/

Noun

radon n (uncountable)

1. radon

Declension

Declension of radon
	Uncountable
	Indefinite	Definite
Nominative	radon	radonet	—	—
Genitive	radons	radonets	—	—