[goo-gawl-pleks, -gol-, -guhl-]
a number that is equal to 1 followed by a googol of zeros and expressed as .

1935–40; googol + -plex Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
googolplex (ˈɡuːɡɒlˌplɛks, -ɡəl-)
the number represented as one followed by a googol (10100) of zeros
[C20: from googol + (du)plex]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
googolplex   (g'gôl-plěks')  Pronunciation Key 
The number 10 raised to the power googol, written out as the numeral 1 followed by a googol (10100) of zeros.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

googolplex definition

The number represented in base-ten by a one with a googol zeroes after it.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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