rontogram

An SI unit of mass equal to 10⁻²⁷ grams. Symbol: rg

Noun

  1. An SI unit of mass equal to 10⁻²⁷ grams. Symbol: rg
    • The arrival of the new prefixes means the Earth can now be said to weigh six ronnagrams, and Jupiter about two quettagrams. An electron weighs about a rontogram, and a single bit of data stored on a mobile phone adds...

Origin

From ronto- + gram.

Forms

rontograms rontogramme