actinon

== English == === Etymology === Contraction of actinium emanation. === Noun === actinon (plural actinons) (physics, dated) Radon-219 (21986Rn; symbol An), an isotope of radon (obsolete) Synonym of radon. (dated) An actinide ==== Synonyms ==== (an isotope of radon): ==== Hypernyms ==== ==== Coordinate terms ==== ==== Translations ==== === Anagrams === cantion, contain, nanotic == Romanian == === Etymology === Borrowed from French actinon. === Noun === actinon n (uncountable) actinon ==== Declension ====