thoron

== English == === Etymology === Contraction of thorium emanation. === Noun === thoron (uncountable) (physics) Radon-220 (22086Rn; symbol Tn), an isotope of radon (organic chemistry) Alternative form of thorin (“C16H11AsN2O10S2.2Na”). ==== Usage notes ==== While the chemical symbol "Tn" was at some point assigned to the isotope thoron, said isotope of radon is perhaps better called by the symbol 220Rn, to make it clear that it is an isotope of radon with said mass number. ==== Synonyms ==== ==== Hypernyms ==== ==== Coordinate terms ==== ==== Related terms ==== === Anagrams === Horton, Rhoton == French == === Noun === thoron m (uncountable) thoron (“isotope of radon”) === Further reading === “thoron”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012