Radioactinium

Noun

Word Frequency: 0.0

Definitions

1.NounThe radioactive isotope of actinium, 22789Ac, having a half-life of 21.7 years

The Daily Word NerdA new word, a puzzle, and a fun fact — free in your inbox every morning.

Free forever · unsubscribe anytime · all 14 newsletters

That email did not go through — please check it and try again.