ronnasecond

English

Etymology

From ronna- +‎ second.

Noun

ronnasecond (plural ronnaseconds)

  1. (metrology) An SI unit of time equal to 1027 seconds. Symbol: Rs
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.