Meaning of rontogram | Babel Free

Definitions

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

Examples

“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 about 10 quectograms to its mass.”

CEFR level