ronnameter
nounEtymology From ronna- + meter.
1
US US spelling of ronnametre.
- The observable universe is about one ronnameter in diameter.
- An electron’s mass is about one rontogram, Jupiter weighs two quettagrams and the diameter of the observable universe is one ronnameter.2022 November 23, Katrina Krämer, “SI units get new prefixes for huge and tiny numbers”, in Chemistry World: