RADIOACTIVITY - Definition & Meaning for Kids

Simple definitions and word synonyms for kids.

Meaning 1

Part of speech: Noun

the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

Synonyms

Radiation, Radioactivity

🔗 Related Words

radioactive – A related word in the same word family.

ity – A related word in the same word family.

🧩 Fun Fact

Some English words are 'fossil words'—they only survive in idioms or fixed phrases.

🎵 Words that Rhyme with Radioactivity

AbcAbilityActualityActuaryAdversityAgonizinglyAmphoraeAnarchyAntiAntinomyApogeeApologeticallyApologyApostrophe

➡️ Words that Start with RA

Rarify Ragtag Raciest Rabats Rasping Rangelands Rarefy Radiophoto Rationalisation Ratiocinative Rabbinic Rambutans

Words that End with TY ⬅️

Indefinity Indemnity Indestructibility Indictability Indigestibility Indignity Ingenuity Inhomogeneity Inhospitality Inhumanity Internationality Intractability