radioactivity
1 synonym for radioactivity, grouped by meaning and by how common each one is.
Noun — The spontaneous release of radiation from unstable atomic nuclei as they break down.
Synonyms
Everyday swaps
Common words most readers know — safe in any writing.
How to use radioactivity
The word patterns that sound natural to a native speaker.
levels of radioactivity
measure radioactivity
Etymology
From "radioactive" plus the noun-forming suffix "-ity".
Full origin of radioactivity →Frequently asked questions
What does “radioactivity” mean?
The word “radioactivity” means the spontaneous release of radiation from unstable atomic nuclei as they break down. In plain terms, the physical process (or the radiation itself) produced when unstable atomic nuclei decay.
How do you pronounce “radioactivity”?
“Radioactivity” is pronounced ray-deer-uuak-TIH-vih-tee (/ˌreɪdɪəʊakˈtɪvɪti/ in IPA).
How do you use “radioactivity” in a sentence?
Here is “radioactivity” used in a sentence: “Scientists measured the radioactivity of the soil samples near the plant.”
What part of speech is “radioactivity”?
“Radioactivity” is a noun.
