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Meaning of duodecillion

du•o•de•cil•lion

Pronunciation: (d"ō-di-sil'yun, dy"-), [key]
— n., pl. adj. -lions, -lion,
—n.
  1. a cardinal number represented in the U.S. by 1 followed by 39 zeros, and in Great Britain by 1 followed by 72 zeros.
—adj.
  1. amounting to one duodecillion in number.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.