thoron

American  

[thawr-on, thohr-] / ˈθɔr ɒn, ˈθoʊr- /

noun

Chemistry.

1. a radioactive isotope of radon, produced by the disintegration of thorium. Tn; 220; 86.

---

thoron British  

/ ˈθɔːrɒn /

noun

1. a radioisotope of radon that is a decay product of thorium. Symbol: Tn or ²²⁰ Rn; atomic no: 86; half-life: 54.5s

---

Etymology

Origin of thoron

First recorded in 1925–30; thor(ium) + -on ²

Example Sentences

It would seem that Mr. London, a leader of klezmer groups in New York, and his librettist, the playwright Elise Thoron, have some explaining to do.

From New York Times

Mr. London and Ms. Thoron are both white.

From New York Times

The opera, by Frank London, Elise Thoron and Music-Theatre Group, combines Afro-Cuban and klezmer music to tell the story of an indigenous Taino leader who fought against Spanish colonization, and a 20th-century Jewish refugee and poet who was inspired by him.

From New York Times

In 1984, before the Berlin Wall came crashing down, a young Slavic-languages scholar from Manhattan named Elise Thoron went to Leningrad and fell in with the theater students.

From Seattle Times

We caught up with Thoron hours before she flew out of New York to visit her partner’s family in Rome.

From Seattle Times