radon

See also: Radon, rádon, radón, rađon, 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/

• Audio (Southern England)

  (file)

Noun

radon (uncountable)

1. The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.
2. The most stable isotope of this element, ²²²₈₆Rn.

Synonyms

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

Usage notes

The isotopes ²²²Rn, ²²⁰Rn, and ²¹⁹Rn were discovered independently, and were called radon, thoron, and actinon respectively. In 1957, it was finally decided that the name radon should refer to the element in general, regardless of isotope.

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 (taijsāti)
• 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)

• Khmer: រ៉ាដុង (raadong)
• 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
• Occitan: radon m
• 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)

References

• Radon on the British Royal Society of Chemistry's online periodic table

See also

• actinon
• radium emanation

Anagrams

• Ardon, Daron, Doran, Drona, NORAD, Nador, 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): /ˈrɑ(ː)don/, [ˈrɑ(ː)do̞n]
• Rhymes: -ɑdon
• Syllabification: 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

Possessive forms of radon (type paperi)
possessor	singular	plural
1st person	radonini	radonimme
2nd person	radonisi	radoninne
3rd person	radoninsa

See also

• raadon

Anagrams

• andro-

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French

Pronunciation

• IPA^(key): /ʁa.dɔ̃/

• Audio

  (file)

• Rhymes: -ɔ̃

Noun

radon m (uncountable)

1. radon

Further reading

• “radon”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

Anagrams

• rando

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Galician

Noun

radon m (uncountable)

1. radon

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Hungarian

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

Pronunciation

• IPA^(key): [ˈrɒdon]
• Hyphenation: ra‧don
• Rhymes: -on

Noun

radon (usually uncountable, plural radonok)

1. radon

Declension

Inflection (stem in -o-, back harmony)
	singular	plural
nominative	radon	radonok
accusative	radont	radonokat
dative	radonnak	radonoknak
instrumental	radonnal	radonokkal
causal-final	radonért	radonokért
translative	radonná	radonokká
terminative	radonig	radonokig
essive-formal	radonként	radonokként
essive-modal	—	—
inessive	radonban	radonokban
superessive	radonon	radonokon
adessive	radonnál	radonoknál
illative	radonba	radonokba
sublative	radonra	radonokra
allative	radonhoz	radonokhoz
elative	radonból	radonokból
delative	radonról	radonokról
ablative	radontól	radonoktól
non-attributive possessive - singular	radoné	radonoké
non-attributive possessive - plural	radonéi	radonokéi

Possessive forms of radon
possessor	single possession	multiple possessions
1st person sing.	radonom	radonjaim
2nd person sing.	radonod	radonjaid
3rd person sing.	radonja	radonjai
1st person plural	radonunk	radonjaink
2nd person plural	radonotok	radonjaitok
3rd person plural	radonjuk	radonjaik

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Icelandic

Chemical element
Rn
Previous: astat (As)
Next: fransín (Fr)

Noun

radon n (genitive singular radons, no plural)

1. radon (chemical element)

Declension

declension of radon

n-s	singular
	indefinite	definite
nominative	radon	radonið
accusative	radon	radonið
dative	radoni	radoninu
genitive	radons	radonsins

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Italian

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

Pronunciation

• IPA^(key): /ˈra.don/
• Rhymes: -adon
• Hyphenation: rà‧don

Noun

radon m (invariable)

1. (chemistry) radon

Anagrams

• Andro, Nardò, Rando, andro-, 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/, [ˈräd̪ɔn]
• (Ecclesiastical) IPA^(key): /ˈra.don/, [ˈräːd̪on]

Noun

radon n (genitive radī); second declension

1. radon

Declension

Second-declension noun (neuter, 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

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

Pronunciation

• IPA^(key): /ˈra.dɔn/

• Audio

  (file)

• Rhymes: -adɔn
• Syllabification: ra‧don

Noun

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

Further reading

• radon in Wielki słownik języka polskiego, Instytut Języka Polskiego PAN
• radon in Polish dictionaries at PWN

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Romanian

Etymology

From French radon.

Noun

radon n (uncountable)

1. radon

Declension

declension of radon (singular only)

	singular
n gender	indefinite articulation	definite articulation
nominative/accusative	(un) radon	radonul
genitive/dative	(unui) radon	radonului
vocative	radonule

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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): /ráːdɔn/, /radóːn/

Noun

radọ̑n or radón m inan

1. radon

Inflection

Masculine inan., hard o-stem
nominative	rádon
genitive	rádona
	singular
nominative	rádon
accusative	rádon
genitive	rádona
dative	rádonu
locative	rádonu
instrumental	rádonom

Further reading

• “radon”, in Slovarji Inštituta za slovenski jezik Frana Ramovša ZRC SAZU, portal Fran

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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	—	—

Anagrams

• andor, donar, ordna, rodna