Tonian

English

Etymology

From Ancient Greek τόνος (tónos, “stretch”).

Adjective

Tonian (not comparable)

  1. (geology) Of a geologic period within the Neoproterozoic era from about 1000 to 850 million years ago.

Proper noun

Tonian

  1. (geology) The Tonian period.

Translations

See also

  • Appendix:Geologic timescale

Anagrams

This article is issued from Wiktionary. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.