ronnagram

English

Etymology

From ronna- +‎ gram.

Noun

ronnagram (plural ronnagrams)

1. (metrology) An SI unit of mass equal to 10²⁷ grams. Symbol: Rg

   The Earth weighs about six ronnagrams.

   • 2022 November 18, Ian Sample, “Earth weighs in at six ronnagrams as new prefixes picked for big and small”, in The Guardian‎^[1]:

     The arrival of the new prefixes means the Earth can now be said to weigh six ronnagrams, and Jupiter about two quettagrams.