Dictionary.com

actinon

[ ak-tuh-non ]
/ ˈæk təˌnɒn /

noun Chemistry.

a chemically inert, gaseous, short-lived isotope of radon that is a member of theactinium series. Symbol: An; atomic number: 86; atomic weight: 219.

QUIZZES

LEARN THE SPANISH WORDS FOR THESE COMMON ANIMALS!

Are you learning Spanish? Or do you just have an interest in foreign languages? Either way, this quiz on Spanish words for animals is for you.
Question 1 of 13
How do you say “cat” 🐈 in Spanish?
gato/gata
cato/cata
gatto/gatta
TAKE THE QUIZ TO FIND OUT
Also called actinium emanation.

Origin of actinon

From New Latin, dating back to 1925–30; see origin at actinium, -on2

Words nearby actinon

Actinomycetales, actinomycete, actinomycin, actinomycoma, actinomycosis, actinon, actinopod, actinopterygian, actinotherapy, actinouranium, actinozoan
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for actinon

actinon
/ (ˈæktɪˌnɒn) /

noun

a radioisotope of radon that is a decay product of radium. Symbol: An or 219 Rn; atomic no: 86; half-life: 3.92s
another name for actinide

Word Origin for actinon

C20: New Latin, from actinium + -on
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012