A generic word for a very large number. The term has no well-defined mathematical meaning. Conway
 and Guy (1996) define the th
 zillion as 
 in the American system (
,
 
, 
, ...) and 
 in the British system (
, 
, 
, ...). Conway and Guy (1996) also define the
 words n-plex and n-minex
 for 
 and 
, respectively.
Zillion
See also
Large NumberExplore with Wolfram|Alpha
References
Conway, J. H. and Guy, R. K. The Book of Numbers. New York: Springer-Verlag, pp. 13-16, 1996.Referenced on Wolfram|Alpha
ZillionCite this as:
Weisstein, Eric W. "Zillion." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Zillion.html