zettametre

plural zettametres

1. metrologyAn SI unit of length equal to 10²¹ metres. Symbol: Zm

   Holonyms: yottametre < ronnametre < quettametre

   4 more examples

   Meronyms: picometre < nanometre < micrometre < millimetre < centimetre < decimetre < metre < kilometre < megametre < gigametre < terametre < petametre < exametre

   The largest known galaxy, at the centre of the Abell 2029 cluster in Virgo, has a diameter of around 53 zettametres.

   1994, New Scientist - Volume 144, Issues 1951-1958, page 81

   As one of my reviewers (SP Gray) puts it: '...I think that Andromeda will be a good deal closer to the Solar System than it is now, before we read of its distance in zettametres'

   2015 August, Keith Atkin, “Time to ditch non-SI units in physics teaching?”, in Physics Education, volume 50, number 5

   How many kiloparsecs are there in a zettametre (10²¹ m)?

   2018, Margreth Tadie, Robert Pott, Neill Goosen, Petrie Van Wyk, Karin Elizabeth Wolff, “Expanding 1st year problem-solving skills through unit conversions and estimations”, in IEEE Global Engineering Education Conference (EDUCON)