radioactivity
/ˌreɪdiəʊækˈtɪvɪti/
Syllables ra·di·o·ac·tiv·i·ty
Stress ra-di-o-ac-TIV-i-ty
Phonics Breakdown
ra
/reɪ/
long a
dio
/diəʊ/
vowel team
ac
/æk/
short a
tiv
/tɪv/
short i
i
/ɪ/
short i
ty
/ti/
y vowel ai
Meaning
the emission of energy as particles or waves from radioactive substances
Sound Reference
💡
ra=/reɪ/(ray) + dio=/diəʊ/(radio) + ac=/æk/(act) + tiv=/tɪv/(active) + i=/ɪ/(it) + ty=/ti/(city)
Example
Scientists measure radioactivity to ensure nuclear safety.