name
Meaning 1
A surname from German.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Standard Lemma guide
radon
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
-
rā'dŏn
-
/ˈɹeɪdɒn/
-
Southern-England: Recorded audio is listed in the source snapshot.
-
General-American: Recorded audio is listed in the source snapshot.
-
CMU ARPABET: R EY1 D AA2 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
name
Meaning 2
A surname from German.
Johann Radon (1887-1956), an Austrian mathematician with results in measure theory, functional analysis and geometry.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
noun
Meaning 3
The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
noun
Meaning 4
Radon-222 (22286Rn), the most stable isotope of said element.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
noun
Meaning 5
a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: Rn, atomic number 86
Antonyms: none provided
Broader terms: chemical element, element, noble gas, inert gas, argonon
History
Etymology
Etymology tree Latin radiusder. French radio- Proto-Indo-European *h2eǵ- Proto-Indo-European *-eti Proto-Indo-European *h2éǵeti Proto-Italic *agō Latin agō Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus ▲ Ancient Greek ἐνεργητῐκός (energētĭkós)sl. Latin āctīvusbor. Old French actif French actif French radio(actif) Proto-Indo-European *-(i)yós Proto-Italic *-ijos Proto-Italic *-ios Old Latin -ios Latin -ius Latin -ium French radiumbor. English radiumder. Proto-Indo-European *h1éǵh Proto-Indo-European *-s Proto-Indo-European *h1éǵhs Proto-Italic *eks Latin exder. Latin ē Proto-Indo-European *meh2-der. Proto-Indo-European *meh2-no-der. Latin mānō Proto-Italic *-āzi ▲ Latin -ereinflu. Latin -āre Latin mānāre Latin ēmānārebor. English emanate Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin -ātiōlbor. Old French -ationbor. Middle English -acioun English -ation English -ion English emanationder. English radium emanationder. English radon Contraction of radium emanation, since the element appears in the radioactive decay of radium. By surface analysis, radio- + -on (“suffix for noble gases”).
Across languages
Translations
67 source translations are retained for this English entry.
- Afrikaans: radon — chemical element
- Arabic: رَادُون (rādūn) — chemical element
- Armenian: ռադոն (ṙadon) — chemical element
- Asturian: radón — chemical element
- Basque: radona — chemical element
- Belarusian: радо́н (radón) — chemical element
- Bulgarian: радо́н (radón) — chemical element
- Catalan: radó — chemical element
- Chinese Mandarin: 氡 (dōng) — chemical element
- Czech: radon — chemical element
- Danish: radon — chemical element
- Dutch: radon — chemical element
- Esperanto: radono — chemical element
- Estonian: radoon — chemical element
- Faroese: radon — chemical element
- Finnish: radon — chemical element
- French: radon — chemical element
- West-Frisian: radon — chemical element
- Friulian: radon — chemical element
- Galician: radon — chemical element
- Georgian: რადონი (radoni) — chemical element
- German: Radon — chemical element
- Greek: ραδόνιο (radónio) — chemical element
- Hebrew: רדון (radón) — chemical element
- Hindi: तैजसाति (taijsāti) — chemical element
- Hungarian: radon — chemical element
- Icelandic: radon — chemical element
- Irish: radón — chemical element
- Italian: radon — chemical element
- Italian: rado — chemical element
- Japanese: ラドン (radon) — chemical element
- Kashubian: redón — chemical element
- Kazakh: радон (radon) — chemical element
- Khmer: រ៉ាដុង (raadong) — chemical element
- Korean: 라돈 (radon) — chemical element
- Latvian: radons — chemical element
- Lithuanian: radonas — chemical element
- Luxembourgish: Radon — chemical element
- Macedonian: радон (radon) — chemical element
- Malay: radon — chemical element
- Maltese: radon — chemical element
- Manx: raadon — chemical element
- Mongolian: радон (radon) — chemical element
- Norwegian: radon — chemical element
- Occitan: radon — chemical element
- Persian: رادون (râdon) — chemical element
- Polish: radon — chemical element
- Portuguese: rádon — chemical element
- Romanian: radon — chemical element
- Russian: радо́н (radón) — chemical element
- Serbo-Croatian: радон — chemical element
- Serbo-Croatian: radon — chemical element
- Slovak: radón — chemical element
- Slovene: radon — chemical element
- Spanish: radón — chemical element
- Swedish: radon — chemical element
- Tajik: радон (radon) — chemical element
- Tamil: ரேடோன் (rēṭōṉ) — chemical element
- Tamil: ஆரகன் (ārakaṉ) — chemical element
- Thai: เรดอน (ree-dɔ̂n) — chemical element
- Turkish: radon — chemical element
- Ukrainian: радо́н (radón) — chemical element
- Uyghur: رادون (radon) — chemical element
- Uzbek: radon — chemical element
- Uzbek: радон (radon) — chemical element
- Vietnamese: rađơn — chemical element
- Volapük: radonin — chemical element