1noun
the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
01 Word definition
radioactivity
13 letters · 6 vowels · 7 consonants
Is RADIOACTIVITY a word?
Yes. RADIOACTIVITY is a 13-letter noun. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay Check the official dictionary for your particular word game before playing it.
Correct spelling
R-A-D-I-O-A-C-T-I-V-I-T-YHow do you spell RADIOACTIVITY?
RADIOACTIVITY contains 13 letters, begins with R, and ends with Y.
Check another spelling →Meaning and definition
Synonyms
Source: Open English WordNet 2025 (CC BY 4.0) ↗radiation
02 Letter breakdown
How is RADIOACTIVITY spelled?
R1A2D3I4O5A6C7T8I9V10I11T12Y13
03 Word-game status
Can you play RADIOACTIVITY?
UnscramblerHQ dictionary
This spelling is present in our broad English solver dictionary.
Scrabble
Base tile value: 22 points. Confirm eligibility in the official word list used for your region and edition.
Words With Friends
Base tile value: 23 points. Confirm eligibility inside the current game dictionary.
FAQ Quick answers
About RADIOACTIVITY.
How do you spell RADIOACTIVITY?
RADIOACTIVITY is spelled R-A-D-I-O-A-C-T-I-V-I-T-Y. It contains 13 letters.