Word Pronunciation & Dictionary

radon

/ˈɹeɪdɒn/

Word Rarity Rare

Frequency: Zipf frequency 2.89 in modern English

Syllables: radon
IPA: /ˈɹeɪdɒn/

6

Scrabble Score

5

Letters

2

Syllables

5

Unique Chars

Meaning

noun

The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.

Uncountable

noun

The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.

Countable

noun

Radon-222 (22286Rn), the most stable isotope of said element.

Uncountable

name

A surname from German.

name

A surname from German.

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 -iusnom. 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”).

Usage

Derived Forms

nonradon radonate radoniferous radonproof

Phrases

eka-radon radon difluoride radon fluoride radon seed radium emanation Radon measure Radon point Radon transform

Frequently Paired Words

radium actinon radium emanation

Synonyms

emanation niton exradio radeon radium emanation rn atomic number 86

Questions

How do you pronounce radon?: The recorded pronunciation is /ˈɹeɪdɒn/.
What does radon mean?: The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.
Where does radon come from?: 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 -iusnom. 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”).

How to pronounce radon

Open the pronunciation page — Open the Speakur entry for “radon”.
Read the phonetic spelling — Read the IPA spelling (/ˈɹeɪdɒn/) so you know which sounds to aim for.
Play the audio — Click Play to hear reference audio for “radon”.
Repeat and practice — Say “radon” aloud, matching stress and vowels until it feels natural.