Word Games Pro Dictionary
actinon
noun
Any of a series of radioactive elements with atomic numbers 89 through 103
Quick reference
Word Facts
Listen
Audio Pronunciation
Meaning
Definitions
noun
Any of a series of radioactive elements with atomic numbers 89 through 103
noun
An radioisotope of radon with a half-life of about four seconds
Similar words
Synonyms
Check yourself
Practise This Word
Three quick questions on this word. Nothing is recorded — practise it as often as you like.