from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of a geologic period within the Neoproterozoic era from about 1000 to 850 million years ago.
- n. The Tonian period.
Sorry, no etymologies found.
Plus, I'm one of those diversity types who was tenured during the Tonian era or in other words before it was fashionable.
It was here that Aristagoras, the leader of the Tonian revolt against the