noun · 13 senses · updated from the 2026-07-25 local source snapshot
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
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Canada, UK, US:/ˌɹeɪ.diˈeɪ.ʃən/
London:Recorded audio is listed in the source snapshot.
Southern-England:Recorded audio is listed in the source snapshot.
Texas:Recorded audio is listed in the source snapshot.
Australian:/ˌɹæɪ.diˈæɪ.ʃən/
/ɹæ.diˈeɪ.ʃən/some Ghanaian speakers
CMU ARPABET:R EY2 D IY0 EY1 SH AH0 N
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
The shooting forth of anything from a point or surface, like diverging rays of light.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Examples
The radiation of love from the crowd was addictive to the young singer-songwriters.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
The shooting forth of anything from a point or surface, like diverging rays of light.
Ellipsis of electromagnetic radiation.
Definition source: English Wiktionary via Wiktextract
syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours
Definition source: Princeton WordNet 3.0
Examples
he was suffering from radiation
Meaning relationships
Synonyms: radiation sickness, radiation syndrome
Antonyms: none provided
Broader terms: syndrome
History
Etymology
Borrowed from Latin radiatio, radiationis. By surface analysis, radiate + -ion.
Across languages
Translations
205 source translations are retained for this English entry.
Albanian:
rrezatim
— shooting forth of anything from a point or surface
Arabic:
إِشْعَاع
(ʔišʕāʕ)
— shooting forth of anything from a point or surface
Armenian:
ճառագայթում
(čaṙagaytʻum)
— shooting forth of anything from a point or surface
Belarusian:
выпрамяне́нне
(vypramjanjénnje)
— shooting forth of anything from a point or surface
Catalan:
radiació
— shooting forth of anything from a point or surface
Chinese Mandarin:
放射
(fàngshè)
— shooting forth of anything from a point or surface
Chinese Mandarin:
輻射 /辐射
(fúshè)
— shooting forth of anything from a point or surface
Dutch:
straling
— shooting forth of anything from a point or surface
Finnish:
säteily
— shooting forth of anything from a point or surface
French:
radiation
— shooting forth of anything from a point or surface
Georgian:
გამოსხივება
(gamosxiveba)
— shooting forth of anything from a point or surface
Georgian:
სხივთფენა
(sxivtpena)
— shooting forth of anything from a point or surface
German:
Strahlung
— shooting forth of anything from a point or surface
Hungarian:
radiáció
— shooting forth of anything from a point or surface
Hungarian:
sugárzás
— shooting forth of anything from a point or surface
Hungarian:
kisugárzás
— shooting forth of anything from a point or surface
Indonesian:
radiasi
— shooting forth of anything from a point or surface
Italian:
radiazione
— shooting forth of anything from a point or surface
Japanese:
放射
(hōsha)
— shooting forth of anything from a point or surface
Japanese:
輻射
(fukusha)
— shooting forth of anything from a point or surface
Korean:
방사
(bangsa)
— shooting forth of anything from a point or surface
Korean:
폭사
(poksa)
— shooting forth of anything from a point or surface
Malay:
sinaran
— shooting forth of anything from a point or surface
Māori:
whitinga
— shooting forth of anything from a point or surface
Māori:
tūhekenga
— shooting forth of anything from a point or surface
Māori:
hihinga
— shooting forth of anything from a point or surface
Norwegian Bokmål:
utstråling
— shooting forth of anything from a point or surface
Persian:
تابش
(tâbeš)
— shooting forth of anything from a point or surface
Polish:
promieniowanie
— shooting forth of anything from a point or surface
Portuguese:
irradiação
— shooting forth of anything from a point or surface
Portuguese:
radiação
— shooting forth of anything from a point or surface
Romanian:
radiație
— shooting forth of anything from a point or surface
Russian:
излуче́ние
(izlučénije)
— shooting forth of anything from a point or surface
Serbo-Croatian:
радија́ција
— shooting forth of anything from a point or surface
Serbo-Croatian:
зра́че̄ње
— shooting forth of anything from a point or surface
Serbo-Croatian:
radijácija
— shooting forth of anything from a point or surface
Serbo-Croatian:
zráčēnje
— shooting forth of anything from a point or surface
Slovene:
sévanje
— shooting forth of anything from a point or surface
Slovene:
žárčenje
— shooting forth of anything from a point or surface
Spanish:
radiación
— shooting forth of anything from a point or surface
Swedish:
strålning
— shooting forth of anything from a point or surface
Swedish:
utstrålning
— shooting forth of anything from a point or surface
Tagalog:
ninag
— shooting forth of anything from a point or surface
Tagalog:
radyasyon
— shooting forth of anything from a point or surface
Ukrainian:
випромі́нювання
(vypromínjuvannja)
— shooting forth of anything from a point or surface
Ukrainian:
випромі́нення
(vypromínennja)
— shooting forth of anything from a point or surface
Vietnamese:
phóng xạ
— shooting forth of anything from a point or surface
Vietnamese:
bức xạ
— shooting forth of anything from a point or surface
Albanian:
rrezatim
— process of radiating waves or particles
Armenian:
ճառագայթում
(čaṙagaytʻum)
— process of radiating waves or particles
Belarusian:
выпрамяне́нне
(vypramjanjénnje)
— process of radiating waves or particles
Bulgarian:
излъ́чване
(izlǎ́čvane)
— process of radiating waves or particles
Bulgarian:
радиа́ция
(radiácija)
— process of radiating waves or particles
Catalan:
radiació
— process of radiating waves or particles
Chinese Mandarin:
輻射 /辐射
(fúshè)
— process of radiating waves or particles
Czech:
záření
— process of radiating waves or particles
Dutch:
straling
— process of radiating waves or particles
Finnish:
säteilytys
— process of radiating waves or particles
Finnish:
säteilyttäminen
— process of radiating waves or particles
Georgian:
გამოსხივება
(gamosxiveba)
— process of radiating waves or particles
Georgian:
რადიაცია
(radiacia)
— process of radiating waves or particles
German:
Strahlung
— process of radiating waves or particles
Hungarian:
sugárzás
— process of radiating waves or particles
Indonesian:
radiasi
— process of radiating waves or particles
Italian:
radiazione
— process of radiating waves or particles
Kazakh:
сәулелендіру
(säulelendıru)
— process of radiating waves or particles
Northern Kurdish:
tîrojdan
— process of radiating waves or particles
Māori:
whitinga
— process of radiating waves or particles
Norwegian Bokmål:
stråling
— process of radiating waves or particles
Polish:
promieniowanie
— process of radiating waves or particles
Portuguese:
radiação
— process of radiating waves or particles
Russian:
излуче́ние
(izlučénije)
— process of radiating waves or particles
Serbo-Croatian:
радија́ција
— process of radiating waves or particles
Serbo-Croatian:
зра́че̄ње
— process of radiating waves or particles
Serbo-Croatian:
radijácija
— process of radiating waves or particles
Serbo-Croatian:
zráčēnje
— process of radiating waves or particles
Slovene:
sévanje
— process of radiating waves or particles
Slovene:
žárčenje
— process of radiating waves or particles
Spanish:
radiación
— process of radiating waves or particles
Swedish:
strålning
— process of radiating waves or particles
Tagalog:
radyasyon
— process of radiating waves or particles
Tagalog:
dagalat
— process of radiating waves or particles
Turkish:
ışınım
— process of radiating waves or particles
Ukrainian:
випромі́нювання
(vypromínjuvannja)
— process of radiating waves or particles
Ukrainian:
випромі́нення
(vypromínennja)
— process of radiating waves or particles
Armenian:
ճառագայթում
(čaṙagaytʻum)
— transfer of energy via radiation
Belarusian:
выпрамяне́нне
(vypramjanjénnje)
— transfer of energy via radiation
Bulgarian:
излъ́чване
(izlǎ́čvane)
— transfer of energy via radiation
Catalan:
radiació
— transfer of energy via radiation
Chinese Mandarin:
輻射 /辐射
(fúshè)
— transfer of energy via radiation
Czech:
sálání
— transfer of energy via radiation
Danish:
varmestråling
— transfer of energy via radiation
Finnish:
säteily
— transfer of energy via radiation
Georgian:
გამოსხივება
(gamosxiveba)
— transfer of energy via radiation
Georgian:
რადიაცია
(radiacia)
— transfer of energy via radiation
Indonesian:
radiasi
— transfer of energy via radiation
Italian:
irraggiamento
— transfer of energy via radiation
Māori:
whitinga
— transfer of energy via radiation
Norwegian Bokmål:
stråling
— transfer of energy via radiation
Polish:
promieniowanie
— transfer of energy via radiation
Russian:
излуче́ние
(izlučénije)
— transfer of energy via radiation
Serbo-Croatian:
радија́ција
— transfer of energy via radiation
Serbo-Croatian:
зра́че̄ње
— transfer of energy via radiation
Serbo-Croatian:
radijácija
— transfer of energy via radiation
Serbo-Croatian:
zráčēnje
— transfer of energy via radiation
Slovene:
sévanje
— transfer of energy via radiation
Slovene:
žárčenje
— transfer of energy via radiation
Spanish:
radiación
— transfer of energy via radiation
Swedish:
strålning
— transfer of energy via radiation
Tagalog:
radyasyon
— transfer of energy via radiation
Tagalog:
dagalat
— transfer of energy via radiation
Ukrainian:
випромі́нювання
(vypromínjuvannja)
— transfer of energy via radiation
Ukrainian:
випромі́нення
(vypromínennja)
— transfer of energy via radiation
Albanian:
rrezatim
— radioactive energy
Albanian:
rrezatim radioaktiv
— radioactive energy
Arabic:
إِشْعَاع
(ʔišʕāʕ)
— radioactive energy
Armenian:
ճառագայթում
(čaṙagaytʻum)
— radioactive energy
Azerbaijani:
şüalanma
— radioactive energy
Azerbaijani:
radiasiya
— radioactive energy
Belarusian:
радыя́цыя
(radyjácyja)
— radioactive energy
Belarusian:
выпрамяне́нне
(vypramjanjénnje)
— radioactive energy
Bulgarian:
радиа́ция
(radiácija)
— radioactive energy
Bulgarian:
лъче́ние
(lǎčénie)
— radioactive energy
Catalan:
radiació
— radioactive energy
Chinese Mandarin:
放射
(fàngshè)
— radioactive energy
Chinese Mandarin:
輻射 /辐射
(fúshè)
— radioactive energy
Chinese Mandarin:
放射性能量
(fàngshèxìng néngliàng)
— radioactive energy
Czech:
záření
— radioactive energy
Czech:
radiace
— radioactive energy
Danish:
stråling
— radioactive energy
Dutch:
straling
— radioactive energy
Esperanto:
radiado
— radioactive energy
Estonian:
kiirgus
— radioactive energy
Estonian:
radiatsioon
— radioactive energy
Finnish:
säteily
— radioactive energy
French:
radiation
— radioactive energy
French:
rayonnement
— radioactive energy
Georgian:
რადიაცია
(radiacia)
— radioactive energy
Georgian:
გამოსხივება
(gamosxiveba)
— radioactive energy
German:
Strahlung
— radioactive energy
German:
Radiation
— radioactive energy
Greek:
ακτινοβολία
(aktinovolía)
— radioactive energy
Hebrew:
קְרִינָה
— radioactive energy
Hindi:
विकिरण
(vikiraṇ)
— radioactive energy
Hungarian:
sugárzás
— radioactive energy
Indonesian:
radiasi
— radioactive energy
Italian:
radiazione
— radioactive energy
Japanese:
放射
(hōsha)
— radioactive energy
Kazakh:
радиация
(radiasiä)
— radioactive energy
Kazakh:
шығару
(şyğaru)
— radioactive energy
Khmer:
រស្មី
(rĕəʼsməy)
— radioactive energy
Korean:
방사
(bangsa)
— radioactive energy
Kyrgyz:
радиация
(radiatsiya)
— radioactive energy
Lao:
ລັງສີ
(lang sī)
— radioactive energy
Latvian:
starojums
— radioactive energy
Latvian:
radiācija
— radioactive energy
Lithuanian:
spinduliuotė
— radioactive energy
Lithuanian:
radiacija
— radioactive energy
Lithuanian:
spinduliavimas
— radioactive energy
Macedonian:
радијација
(radijacija)
— radioactive energy
Macedonian:
зрачење
(zračenje)
— radioactive energy
Malay:
sinaran
— radioactive energy
Māori:
parawhiti
— radioactive energy
Māori:
iraruke
— radioactive energy
Norwegian Bokmål:
stråling
— radioactive energy
Persian:
پرتو
(partow)
— radioactive energy
Polish:
promieniowanie
— radioactive energy
Polish:
radiacja
— radioactive energy
Portuguese:
radiação
— radioactive energy
Romanian:
radiație
— radioactive energy
Russian:
радиа́ция
(radiácija)
— radioactive energy
Russian:
излуче́ние
(izlučénije)
— radioactive energy
Scottish Gaelic:
rèididheachd
— radioactive energy
Serbo-Croatian:
радија́ција
— radioactive energy
Serbo-Croatian:
зра́че̄ње
— radioactive energy
Serbo-Croatian:
radijácija
— radioactive energy
Serbo-Croatian:
zráčēnje
— radioactive energy
Slovak:
žiarenie
— radioactive energy
Slovak:
radiácia
— radioactive energy
Slovene:
sévanje
— radioactive energy
Slovene:
žárčenje
— radioactive energy
Slovene:
radiacija
— radioactive energy
Spanish:
radiación
— radioactive energy
Swahili:
mnururisho
— radioactive energy
Swedish:
strålning
— radioactive energy
Tagalog:
radyasyon
— radioactive energy
Tagalog:
dagilap
— radioactive energy
Tajik:
радиатсия
(radiatsiya)
— radioactive energy
Tajik:
афканишот
(afkanišot)
— radioactive energy
Tajik:
партав
(partav)
— radioactive energy
Tamil:
கதிர்வீச்சு
(katirvīccu)
— radioactive energy
Thai:
รังสี
(rang-sǐi)
— radioactive energy
Turkish:
radyasyon
— radioactive energy
Turkmen:
radiasiýa
— radioactive energy
Ukrainian:
радіа́ція
(radiácija)
— radioactive energy
Ukrainian:
випромі́нювання
(vypromínjuvannja)
— radioactive energy
Ukrainian:
випромі́нення
(vypromínennja)
— radioactive energy
Uzbek:
radiatsiya
— radioactive energy
Uzbek:
nurlanish
— radioactive energy
Vietnamese:
phóng xạ
— radioactive energy
Chinese Mandarin:
輻射演化 /辐射演化
(fúshè yǎnhuà)
— diversification of an ancestral species
Chinese Mandarin:
適應輻射 /适应辐射
(shìyìng fúshè)
— diversification of an ancestral species
Finnish:
lajien levittäytyminen
— diversification of an ancestral species
German:
Radiation
— diversification of an ancestral species
German:
Auffächerung
— diversification of an ancestral species