ac·​ti·​non ˈak-tə-ˌnän How to pronounce actinon (audio)
: a gaseous radioactive isotope of radon that has a half-life of about four seconds

Dictionary Entries Near actinon

Cite this Entry

“Actinon.” Medical Dictionary, Merriam-Webster, Accessed 21 May. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!