radioactivity
Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or…Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.
» 'Radioactivity' is a chemical term.
"Radioaktivität" ist ein chemischer Begriff. — dima555
"Радіоактивність" - хімічний термін. — ChickenKiev
Tatoeba contributors · Tatoeba · CC BY 2.0 FRMeaning
2 senses(uncountable, usually)Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.
Radioaktivität
радиоакти́вностьradioaktívnostʹ
радіоактивністьradioaktyvnistʹ
the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
(uncountable, usually)The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc.
Radioaktivität
радиоакти́вностьradioaktívnostʹ
радіоакти́вністьradioaktývnistʹ
Examples
9 sentences'Radioactivity' is a chemical term.
"Радіоактивність" - хімічний термін. — ChickenKiev
de"Radioaktivität" ist ein chemischer Begriff. — dima555
'Radioactivity' is a chemistry term.
"Радіоактивність" - хімічний термін. — ChickenKiev
ru"Радиоактивность" - это химический термин. — Selena777
de"Radioaktivität" ist ein chemischer Begriff. — dima555
As time passed, the radioactivity diminished.
ruСо временем радиоактивность снизилась. — marafon
How dangerous are the levels of radioactivity?
The radioactivity leaked out of the nuclear power plant.
Translations
8 languagesBy meaning 2
By meaning 1
By meaning 1
Origin
From radioactive + -ity or radio- + activity.From radioactive + -ity or radio- + activity.
Wiktionary, CC BY-SA 4.0 · source
Forms
plural: radioactivitiesSynonyms
1 synonyms- the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay:radiation
Word family
10 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable