Meaning
Radon-220 (22086Rn; symbol Tn), an isotope of radon
Etymology
Origin: Unknown
Contraction of thorium emanation.
Synonyms & Antonyms
Synonyms
exthoriothoreonthorium emanation
NYT Puzzle Appearances
No published puzzle dates on file for this word yet. It is part of the official NYT Spelling Bee word list for 2019, 2022, 2023, 2024, 2025, 2026.