Meaning of octodecillion

oc•to•de•cil•lion

Pronunciation: (ok"tō-di-sil'yun), [key]
— n., pl. adj. -lions, -lion,
—n.
  1. a cardinal number represented in the U.S. by 1 followed by 57 zeros, and in Great Britain by 1 followed by 108 zeros.
—adj.
  1. amounting to one octodecillion in number.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.